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P87C554 Datasheet(PDF) 8 Page - NXP Semiconductors |
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P87C554 Datasheet(HTML) 8 Page - NXP Semiconductors |
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8 / 77 page  Philips Semiconductors Product data P87C554 80C51 8-bit microcontroller – 12 clock operation 16K/512 OTP/RAM, 8 channel 10-bit A/D, I2C, PWM, capture/compare, high I/O 2002 Mar 25 6 SPECIAL FUNCTION REGISTERS Table 1. Special Function Registers SYMBOL DESCRIPTION DIRECT ADDRESS BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION MSB LSB RESET VALUE ACC* Accumulator E0H E7 E6 E5 E4 E3 E2 E1 E0 00H ADCH# A/D converter high C6H xxxxxxxxB ADCON# A/D control C5H ADC.1 ADC.0 ADEX ADCI ADCS AADR2 AADR1 AADR0 xx000000B AUXR Auxiliary 8EH – – – – – LVADC EXTRAM A0 xxxxx110B AUXR1 Auxiliary A2H ADC8 AIDL SRST GF2 WUPD O – DPS 000000x0B B* B register F0H F7 F6 F5 F4 F3 F2 F1 F0 00H CTCON# Capture control EBH CTN3 CTP3 CTN2 CTP2 CTN1 CTP1 CTN0 CTP0 00H CTH3# Capture high 3 CFH xxxxxxxxB CTH2# Capture high 2 CEH xxxxxxxxB CTH1# Capture high 1 CDH xxxxxxxxB CTH0# Capture high 0 CCH xxxxxxxxB CMH2# Compare high 2 CBH 00H CMH1# Compare high 1 CAH 00H CMH0# Compare high 0 C9H 00H CTL3# Capture low 3 AFH xxxxxxxxB CTL2# Capture low 2 AEH xxxxxxxxB CTL1# Capture low 1 ADH xxxxxxxxB CTL0# Capture low 0 ACH xxxxxxxxB CML2# Compare low 2 ABH 00H CML1# Compare low 1 AAH 00H CML0# Compare low 0 A9H 00H DPTR: DPH DPL Data pointer (2 bytes): Data pointer high Data pointer low 83H 82H 00H 00H AF AE AD AC AB AA A9 A8 IEN0*# Interrupt enable 0 A8H EA EAD ES1 ES0 ET1 EX1 ET0 EX0 00H EF EE ED EC EB EA E9 E8 IEN1*# Interrupt enable 1 E8H ET2 ECM2 ECM1 ECM0 ECT3 ECT2 ECT1 ECT0 00H BF BE BD BC BB BA B9 B8 IP0*# Interrupt priority 0 B8H – PAD PS1 PS0 PT1 PX1 PT0 PX0 x0000000B FF FE FD FC FB FA F9 F8 IP0H Interrupt priority 0 high B7H – PADH PS1H PS0H PT1H PX1H PT0H PX0H x0000000B IP1*# Interrupt priority1 F8H PT2 PCM2 PCM1 PCM0 PCT3 PCT2 PCT1 PCT0 00H IP1H Interrupt priority 1 high F7H PT2H PCM2H PCM1H PCM0H PCT3H PCT2H PCT1H PCT0H 00H P5# Port 5 C4H ADC7 ADC6 ADC5 ADC4 ADC3 ADC2 ADC1 ADC0 xxxxxxxxB C7 C6 C5 C4 C3 C2 C1 C0 P4#* Port 4 C0H CMT1 CMT0 CMSR5 CMSR4 CMSR3 CMSR2 CMSR1 CMSR0 FFH B7 B6 B5 B4 B3 B2 B1 B0 P3* Port 3 B0H RD WR T1 T0 INT1 INT0 TXD RXD FFH A7 A6 A5 A4 A3 A2 A1 A0 P2* Port 2 A0H A15 A14 A13 A12 A11 A10 A9 A8 FFH 97 96 95 94 93 92 91 90 P1* Port 1 90H SDA SCL RT2 T2 CT3I CT2I CT1I CT0I FFH 87 86 85 84 83 82 81 80 P0* Port 0 80H AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 FFH |
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