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P87C52 Datasheet(PDF) 7 Page - NXP Semiconductors |
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P87C52 Datasheet(HTML) 7 Page - NXP Semiconductors |
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7 / 26 page  Philips Semiconductors Product specification 87C524/87C528 80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer 1999 Jul 23 7 Table 1. 8XC524/8XC528 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 B* B register F0H F7 F6 F5 F4 F3 F2 F1 F0 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 IE*# Interrupt enable A8H EA ES1 ET2 ES0 ET1 EX1 ET0 EX0 00H BF BE BD BC BB BA B9 B8 IP*# Interrupt priority B8H – PS1 PT2 PS0 PT1 PX1 PT0 PX0 x0000000B 87 86 85 84 83 82 81 80 P0* Port 0 80H AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 FFH 97 96 95 94 93 92 91 90 P1* Port 1 90H SDA SEL – – – – T2EX T2 FFH A7 A6 A5 A4 A3 A2 A1 A0 P2* Port 2 A0H A15 A14 A13 A12 A11 A10 A9 A8 FFH B7 B6 B5 B4 B3 B2 B1 B0 P3* Port 3 B0H RD WR T1 T0 INT1 INT0 TxD RxD FFH PCON Power control 87H SMOD – – – GF1 GF0 PD IDL 0xxx0000B D7 D6 D5 D4 D3 D2 D1 D0 PSW* Program status word D0H CY AC F0 RS1 RS0 OV F1 P 00H RCAP2H# RCAP2L# SBUF Capture high Capture low Serial data buffer CBH CAH 99H 00H 00H xxxxxxxxB 9F 9E 9D 9C 9B 9A 99 98 SCON* Serial controller 98H SM0 SM1 SM2 REN TB8 RB8 TI RI 00H S1BIT# Serial I2C data D9H/RD SDI 0 0 0 0 0 0 0 x0000000B WR SD0 X X X X X X X 0xxxxxxxB S1INT# Serial I2C interrupt DAH INT X X X X X X X 0xxxxxxxB DF DE DD DC DB DA D9 D8 S1SCS*# Serial I2C control D8H/RD SDI SCI CLH BB RBF WBF STR ENS xxxx0000B WR SD0 SC0 CLH X X X STR ENS 00xxxx00B SP Stack pointer 81H 07H 8F 8E 8D 8C 8B 8A 89 88 TCON* Timer control 88H TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 00H CF CE CD CC CB CA C9 C8 T2CON*# Timer 2 control C8H TF2 EXF2 RCLK TCLK EXEN2 TR2 C/T2 CP/RL2 00H TH0 TH1 TH2# TL0 TL1 TL2# T3# Timer high 0 Timer high 1 Timer high 2 Timer low 0 Timer low 1 Timer low 2 Watchdog timer 8CH 8DH CDH 8AH 8BH CCH FFH 00H 00H 00H 00H 00H 00H 00H TMOD Timer mode 89H GATE C/T M1 M0 GATE C/T M1 M0 00H WDCON# Watchdog control A5H A5H * SFRs are bit addressable. # SFRs are modified from or added to the 80C51 SFRs. |
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