- Acer Labs: M6032, M6759
- Actel: Core8051
- Aeroflex: UT69RH051
- Altium: Nexar TSK51
- Analog Devices: ADE5166, ADE5169, ADE5566, ADE5569, ADE7116, ADE7156, ADE7166, ADE7169, ADE7566, ADE7569, ADuC812, ADuC814, ADuC816, ADuC824, ADuC831, ADuC832, ADuC834, ADuC836, ADuC841, ADuC842, ADuC843, ADuC845, ADuC847, ADuC848
- ASIX: Ax11015, Ax11025, Ax11001, Ax11005
- Atmel: 80C32E, AT48801, AT83C21GC, AT83C22OK, AT83C23OK, AT83C24, AT83C25OK, AT87F51, AT87F52, AT87F55WD, AT89C1051, AT89C1051U, AT89C5131A-L, AT89C5131A-M, AT89C51SND2, AT85C51SND3, AT89F51, AT89F52, AT89LP214, AT89LP414, AT89LP428, AT89LP828, AT89S2051, AT89S4051, AT89S4D12, ATWebSEG-32, T80C31, T80C31X2, T80C32, T80C51, T80C51FP1, T80C51I2, T80C51ID2, T80C51U2, T83/87C51U2, T87C51, TS80C31X2, TS80C32X2, TS80C52X2, TS80C54X2, TS80C58X2, TS87C52X2, TS87C54X2, TS87C58X2, TSC80251G2D, TSC83251G1D, TSC83251G2D, TSC87251G2D, AT80C5112, AT80C51SND1C, AT83C5103, AT83C5111, AT83C5112, AT83C5122, AT83C5123, AT83C5132, AT83C51SND2, AT83EC5122, AT83EC5123, AT83SND1C, AT85C5122, AT85EC5122, AT87C5103, AT87C5111, AT87C5112, AT87F51RC, AT89C2051, AT89C2051X2, AT89C4051, AT89C51, AT89C5122, AT89C5131, AT89C5132, AT89C51CC03, AT89C51ED2, AT89C51IC2, AT89C51ID2, AT89C51RB2, AT89C51RC, AT89C51RC2, AT89C51RD2, AT89C51RE2, AT89C51SND1, AT89C51SND1C, AT89C51SND2, AT89C52, AT89C55, AT89C55WD, AT89LP2052, AT89LP4052, AT89LP216, AT89LP213, AT89LP214, AT89LS51, AT89LS52, AT89LS53, AT89LS8252, AT89LV51, AT89LV52, AT89LV55, AT89S51, AT89S52, AT89S53, AT89S8252, AT89S8253, T80C5112, T83C5101, T83C5102, T83C5121, T85C5121, T87C5101, T87C5111, T87C5112, T89C5115, T89C5121, T89C51AC2, T89C51AC3, T89C51CC01, T89C51CC02, TS80C32x2, TS87C52X2, TS80C52X2, AT80C32X2, AT80C52X2, AT87C52X2, TS80C51RA2, TS80C51RD2, TS83C51RB2, TS83C51RC2, TS83C51RD2, TS87C51RB2, TS87C51RC2, TS87C51RD2, AT89S2051, AT89S4051
- Cast: C8051, D80530, R8051, R80515
- CML Microcircuits: CMX850
- Cybernetic: P-51
- CybraTech: SOC-3000, SOC-4000
- Cypress: EZ-USB, EZ-USB, EZ-USB, EZ-USB FX, EZ-USB FX, EZ-USB FX, EZ-USB FX1, EZ-USB FX1, EZ-USB FX2LP, EZ-USB FX2LP, EZ-USB FX2LP, EZ-USB FX2LP, EZ-USB NX2LP-Flex, EZ-USB NX2LP-Flex
- Daewoo: DMC60C51/31, DMC60C52/32
- Digital Core Design: DP80390, DP80390CPU, DP80390XP, DP8051, DP8051CPU, DP8051XP, DR80390, DR80390CPU, DR80390XP, DR8051, DR8051CPU, DR8051XP
- Dolphin: Flip8051 Breeze, Flip8051 Cyclone, Flip8051 Thunder, Flip8051 Wind
- Domosys: PL-One
- easyplug: IPL0202, IPL0404
- Evatronix: R8051, R80515
- Genesis Microchip: GM2121
- Genesys: GL824C
- Goal Semiconductor: VERSA DSP, VMX1016, VMX1020, VRS1000, VRS1001, VRS1001B, VRS1050, VRS1100, VRS540, VRS550, VRS560, VRS570, VRS580, VRS700, VRS900
- Handshake Solutions: HT-80C51
- Honeywell: HT83C51
- Hynix: GMS90C31, GMS90C32, GMS90C320, GMS90C51, GMS90C52, GMS90C54, GMS90C56, GMS90C58, GMS90L31, GMS90L32, GMS90L320, GMS90L51, GMS90L52, GMS90L54, GMS90L56, GMS90L58, GMS97C1051, GMS97C2051, GMS97C51, GMS97C51H, GMS97C52, GMS97C52H, GMS97C54, GMS97C54H, GMS97C56, GMS97C56H, GMS97C58, GMS97C58H, GMS97L1051, GMS97L2051, GMS97L51, GMS97L52, GMS97L54, GMS97L56, GMS97L58, HMS91C7432, HMS9xC7132, HMS9xC7134, HMS9xC8032
- Infineon: C509-L, SAB 80C535-N, SAB 80C537-N, C501, C503, C504, C504-2E, C504-2R, C504-L, C505, C505A-4E, C505c, C505CA-4E, C505CA-4R, C505L-4E, C508, C515-1R, C515A-4R, C515A-L, C515B-2R, C515C-8E, C515C-8R, C515C-L, C515-L, C517A-L, C868-1RG, C868-1RR, C868-1SG, C868-1SR, SAB80C515, SAB80C515A, SAB80C517, SAB80C537, SAB83C51A, SAB-C504, SAB-C505CA, SAB-C505L, SAF-C505A, SAF-C508, SAF-C868-1RG, SAF-C868-1RR, SAF-C868-1SG BA, SAF-C868-1SR BA, SAF-C868P-1SG BA, SAF-C868P-1SR BA, SAK-C868-1SG BA, SAK-C868-1SR BA, SAK-C868P-1SG BA, SAK-C868P-1SR BA, XC864, XC866, XC886, XC888, XC878
- InnovASIC: IA80C152, IA8x44
- Intel: 80/87L52, 80/87L54, 80/87L58, 80C152JA, 80C152JB, 80C152JC, 80C152JD, 80C51SL, 80L51FA, 81/83/87C51SL, 83/87L51FA, 83/87L51FB, 83/87L51FC, 83C152JA, 83C152JC, 87C51, 8xC151SA, 8xC151SB, 8031AH, 8032AH, 8051AH, 8052AH, 80C31BH, 80C32, 80C51BH, 80C51FA, 80C51GB, 80C51RA, 80C51RB, 80C51RC, 80C52, 80C54, 80C58, 83C51FA, 83C51FB, 83C51FC, 83C51KB, 83C51RA, 83C51RB, 83C51RC, 8752BH, 87C51FA, 87C51FB, 87C51FC, 87C51GB, 87C51RA, 87C51RB, 87C51RC, 87C52, 87C54, 87C58
- ISSI: IS80C31, IS80C32, IS80C51, IS80C52, IS80LV31, IS80LV32, IS80LV51, IS80LV52, IS89C51, IS89C52
- Maxim/Dallas: DS2250, DS2250T, DS2251T, DS2252T, DS5000(T), DS5000FP, DS5000T, DS5001FP, DS5002FP, DS5240, DS5250, DS80C410, DS80C411, DS9072H, DS9072L, DS9075, DS9076, MAX7651, MAX7652, DS80C310, DS80C320, DS80C323, DS80C390, DS80C400, DS83C520, DS83C530, DS87C520, DS87C530, DS87C550, DS89420, DS89C430, DS89C440, DS89C450, DS80C410, DS80C411, DS5250, DS5000, DS5001FP, DS5002FP, DS80CH11
- Megawin: MPC89E51, MPC89E515, MPC89E52, MPC89E53, MPC89E54, MPC89E58, MPC89L51, MPC89L515, MPC89L516X2, MPC89L52, MPC89L53, MPC89L54, MPC89L556X2, MPC89L58
- Mentor Graphics: M8051, M8051EW, M8051W, M8052
- Micronas: SDA 555X TVText Pro,VCT 48xyI, VCT 49xyI, VCT wxyP, HVC2xyzA
- MXIC: MX10C8050, MX10C8050I, MX10C8051IA, MX10F201FC, MX10F202FC, MX10FMAXD
- Myson Technology: CS6208, MTV112E, MTV112M, MTV212M32, MTV212M64i, MTV230M, MTV312M64, MTV412M
- Nordic Semiconductor: nRF24E2, nRF9E5 Multiband, nRF24E1, nRF24LE1, nRF24LU1, nRF24LU1P
- NXP: P80C557E4, P83C557E4, P87LPC761, P87LPC764, P87LPC768, P87LPC778, P89C557E4, P87C52BA, P87C52X2BA, P80C31BA, P80C31BN, P80C31X2BA, P80C31X2BN, 80C32BA, P80C32BN, P80C32FA, P80C32FN, P80C32X2BA, P80C32X2BN, P80C32X2FA, P80C32X2FN, P80C51, P80C52, 80C552, P80C554, 80C592FFA, P80C592FHA,P83C552, P83C592FFA, P83C592FHA, P83C654X2, P83C660X2,P87C51, 87C51BA, P87C51BBD, 87C51BN, P87C51FA, P87C51FBD, P87C51MB2, 87C51MC2,P87C51X2, 87C51X2BA, P87C51X2BBD, P87C51X2BN, P87C51X2FA, P87C51X2FBD, P87C52, P87C52BBD,P87C52BN, 87C52FA, P87C52FBD, P87C52FN, P87C52X2, P87C52X2BBD, P87C52X2BN, P87C52X2FA, P87C52X2FBD,P87C52X2FN, P87C54, P87C54BA, 87C54BBD, P87C54BDH, P87C54BN, P87C54FA, P87C54FBD, P87C54X2, P87C54X2BA,P87C54X2BBD, P87C54X2BDH, P87C54X2BN, P87C54X2FA, P87C54X2FBD, P87C552, P87C554, P87C58,P87C58BA, P87C58BBD, P87C58FA, P87C58FBD, P87C58FN, P87C58X2, P87C58X2BA, P87C58X2BBD, P87C58X2FA, P87C58X2FBD, P87C58X2FN, P87C654X2, P87C660X2,P87C661X2, P87C662X2, P87LPC760, P87LPC762, P89C51,P89C52, P89C58, P89C660, P89C662, P89C664, P89C668, P89LPC901, P89LPC902, P89LPC903, P89LPC904, P89LPC906, P89LPC907, P89LPC908, P89LPC9102, P89LPC9103, P89LPC9107, P89LPC912, P89LPC913, P89LPC914, P89LPC915,P89LPC916, P89LPC917, P89LPC920, P89LPC921, P89LPC922, P89LPC9221, P89LPC924, P89LPC925, P89LPC930, P89LPC931, P89LPC932A1, P89LPC9321, P89LPC9351, P89LPC933, P89LPC934, P89LPC935, P89LPC936, P89LPC938, P89LPC9401, P89LPC952, P89LPC954, P89LV51Rx2, p89v51Rx2, P89LPC9201, P89LPC9211, P89LPC922A1, P89LPC9151, P89LPC9161, P89LPC9171, P89LPC9361, P89LPC9231, P89LPC9241, P89LPC9251, P89LPC9331, P89LPC9341, P89LPC9402, P89LPC9301, P89LPC931A1, P89LPC980, P89LPC982,P89LPC983, P89LPC985, P89LPC970, P89LPC971
- OKI: MSM80C154S, MSM80C31F, MSM80C51F, MSM83C154S
- Oregano Systems: 8051 IP Core
- RadioPulse: MG2400-F48, MG2455-F48
- Ramtron: VMX51C1020, VMX51C1016, VMX51C900, VRS51L3074, VRS51L2070, VRS51C1100, VRS51L1050, VRS51C1000, VRS51C580, VRS51L580, VRS51C570, VRS51L570, VRS51C560, VRS51C550, VRS51L550, VRS51C540, VRS51L540
- RDC: R8032TT
- Sanyo: LC80-SR8051
- Sharp: LZ87010
- Silicon Laboratories: C8051F000, C8051F001, C8051F002, C8051F005, C8051F006, C8051F007, C8051F010, C8051F011, C8051F012, C8051F015, C8051F016, C8051F017, C8051F018, C8051F019, C8051F020, C8051F021, C8051F022, C8051F023, C8051F040, C8051F041, C8051F042, C8051F043, C8051F044, C8051F045, C8051F046, C8051F047, C8051F060, C8051F061, C8051F062, C8051F063, C8051F064, C8051F065, C8051F066, C8051F067, C8051F120, C8051F121, C8051F122, C8051F123, C8051F124, C8051F125, C8051F126, C8051F127, C8051F130, C8051F131, C8051F132, C8051F133, C8051F206, C8051F220, C8051F221, C8051F226, C8051F230, C8051F231, C8051F236, C8051F300, C8051F301, C8051F302, C8051F303, C8051F304, C8051F305, C8051F310, C8051F311, C8051F312, C8051F313, C8051F314, C8051F315, C8051F316, C8051F317, C8051F320, C8051F321, C8051F326, C8051F327, C8051F330, C8051F331, C8051F332, C8051F333, C8051F334, C8051F335, C8051F336, C8051F337, C8051F338, C8051F339, C8051F340, C8051F341, C8051F342, C8051F343, C8051F344, C8051F345, C8051F346, C8051F347, C8051F350, C8051F351, C8051F352, C8051F353, C8051F360, C8051F361, C8051F362, C8051F363, C8051F364, C8051F365, C8051F366, C8051F367, C8051F368, C8051F369, C8051F410, C8051F411, C8051F412, C8051F413, C8051F500, C8051F501, C8051F502, C8051F503, C8051F504, C8051F505, C8051F506, C8051F507, C8051F520, C8051F521, C8051F523, C8051F524, C8051F526, C8051F527, C8051F520A, C8051F521A, C8051F523A, C8051F524A, C8051F526A, C8051F527A, C8051F530, C8051F531, C8051F533, C8051F534, C8051F536, C8051F537, C8051F530A, C8051F531A, C8051F533A, C8051F534A, C8051F536A, C8051F537A, C8051T600, C8051T601, C8051T602, C8051T603, C8051T604, C8051T605, C8051T610, C8051T611, C8051T612, C8051T613, C8051T614, C8051T615, C8051T616, C8051T617, C8051F920, C8051F921, C8051F930, C8051F931, C8051F700, C8051F701, C8051F702, C8051F703, C8051F704, C8051F705, C8051F706, C8051F707, C8051F708, C8051F709, C8051F710, C8051F711, C8051F712, C8051F713, C8051F714, C8051F715, C8051T630, C8051T631, C8051T632, C8051T633, C8051T634, C8051T635, C8051F580, C8051F581, C8051F584, C8051F585, C8051F588, C8051F589, C8051F582, C8051F583, C8051F586, C8051F587, C8051F590, C8051F591, Si8250UM
- Siliconians: SS8203
- SMSC: COM20051, COM20051i, KBC1100, KBC1100L, LPC47N252, LPC47N253, LPC47N350, LPC47N359, USB97C100, USB97C102, USB97C201, USB97C202, USB97C210, USB97C211, USB97C242, USB97CFDC, USB97CFDC2
- SST: SST89C54, SST89C58, SST89C59, SST89E554RC, SST89E564RD, SST89F54, SST89F58, SST89V554RC, SST89V564RD, SST89x516RD2, SST89x52RD2, SST89x54RD2, SST89x58RD2
- STMicroelectronics: uPSD3212A, uPSD3212C, uPSD3212C-40T6, uPSD3212C-40U6, uPSD3212CV, uPSD3212CV-24T6, uPSD3212CV-24U6, uPSD3233B, uPSD3233BV, uPSD3234A, uPSD3234BV, uPSD3253B, uPSD3253BV, uPSD3254A, uPSD3254BV, uPSD3312D, uPSD3312D-40T6, uPSD3312DV, uPSD3312DV-40T6, uPSD3333D, uPSD3333D-40T6, uPSD3333D-40U6, uPSD3333DV, uPSD3333DV-40T6, uPSD3333DV-40U6, uPSD3334D, uPSD3334D-40U6, uPSD3334DV, uPSD3334DV-40U6, uPSD3354D, uPSD3354D-40T6, uPSD3354D-40U6, uPSD3354DV, uPSD3354DV-40T6, uPSD3354DV-40U6, uPSD3422E-40T6, uPSD3422EV-40T6, uPSD3422E-40U6, uPSD3422EV-40U6, uPSD3422EB40T6, uPSD3422EVB40T6, uPSD3422EB40U6, uPSD3422EVB40U6, uPSD3433E-40T6, uPSD3433EV-40T6, uPSD3433E-40U6, uPSD3433EV-40U6, uPSD3433EB40T6, uPSD3433EVB40T6, uPSD3433EB40U6, uPSD3433EVB40U6, uPSD3434E-40T6, uPSD3434EV-40T6, uPSD3434E-40U6, uPSD3434EV-40U6, uPSD3434EB40T6, uPSD3434EVB40T6, uPSD3434EB40U6, uPSD3434EVB40U6, uPSD3454E-40T6, uPSD3454EV-40T6, uPSD3454E-40U6, uPSD3454EV-40U6, uPSD3454EB40T6, uPSD3454EVB40T6, uPSD3454EB40U6, uPSD3454EVB40U6
- SyncMOS: SM59264, SM5964, SM79108, SM79164, SM8051, SM8052, SM8058, SM89516, SM89516A, SM8951A, SM8952A, SM8954A, SM8958A
- Syntek Semiconductor: STK6011Px, STK6012Px
- Teridian: T71M6403, 71M6511, T71M6511, 71M6513, 73M2901, 73M2901CL, 73M2910L, 73S11xx, T71M6521B, T71M6521D, T71M6521F, 71M6523
- Texas Instruments/Chipcon: CC1010, CC1110, CC1111, CC2430, CC2431, CC2510, CC2511, CC2530, CC2531, MSC1213Y2, MSC1213Y3, MSC1213Y4, MSC1213Y5, MSC1214Y2, MSC1214Y3, MSC1214Y4, MSC1214Y5, TAS1020, TUSB2136, TUSB3200, TUSB3210, TUSB5052, TUSB6250, MSC1200Y2, MSC1200Y3, MSC1201Y2, MSC1201Y3, MSC1202Y2, MSC1202Y3, MSC1210Y2, MSC1210Y3, MSC1210Y4, MSC1210Y5, MSC1211Y2, MSC1211Y3, MSC1211Y4, MSC1211Y5, MSC1212Y2, MSC1212Y3, MSC1212Y4, MSC1212Y5, TUSB3410
- Tezzaron: TSCR8051L2, TSCR8051L3, TSCR8051L5
- Triscend: TE502S08, TE505S16, TE512S32, TE520S40
- Vitesse: VSC7380
- Winbond: W77C512, W77C516, W77C58, W77E468, W77x32, W78C32C, W78C33B, W78C354, W78C51D, W78C52D, W78C58, W78E/78C378, W78E354, W78E374, W78E374B, W78E516B, W78E58, W78IE52, W78L33, W78x374, W79E532, W79E548, W79E549, W79E632, W79E648, W79E649, W925E240, W925E625, W77C32, W77E516, W77E532, W77E58, W77IC32, W77IE58, W77L32, W77LE516, W77LE532, W77LE58, W78C32B, W78C438, W78C51, W78C52, W78C54, W78C801, W78E365, W78E51, W78E516, W78E52, W78E54, W78E58B, W78E62, W78E65, W78E812, W78E858, W78ERD2, W78IE51, W78IE54, W78L32, W78L51, W78L52, W78L54, W78L801, W78LE51, W78LE516, W78LE52, W78LE54, W78LE58, W78LE812, W79E217, W79E218, W79E821, W79E822, W79E823, W79E824, W79E825, W79E834, W79E801, W79E802, W79E803, W79E804
- Zensys: ZW0102
- Zylogic: ZE502S08, ZE505S16, ZE512S32, ZE520S40
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