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P87C528EFPN Datasheet(PDF) 3 Page - NXP Semiconductors |
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P87C528EFPN Datasheet(HTML) 3 Page - NXP Semiconductors |
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3 / 26 page  Philips Semiconductors Product specification 87C524/87C528 80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer 1999 Jul 23 3 BLOCK DIAGRAM PROGRAMMABLE I/O CPU T0 T1 COUNTERS XTAL2 XTAL1 INT0 INT1 CONTROL SERIAL IN SERIAL OUT OSCILLATOR AND TIMING PROGRAM MEMORY (32K x 8 EPROM) RAM AUX–RAM DATA MEMORY (256 x 8) TWO 16-BIT TIMER/EVENT COUNTERS DATA MEMORY (256 x 8) 16-BIT TIMER/ EVENT COUNTER WATCHDOG TIMER 64K-BYTE BUS EXPANSION CONTROL PROGRAMMABLE SERIAL PORT FULL DUPLEX UART SYNCHRONOUS SHIFT BIT-LEVEL I2C INTERFACE FREQUENCY REFERENCE T2 T2EX RST EXTERNAL INTERRUPTS PARALLEL PORTS, ADDRESS/DATA BUS AND I/O PINS SHARED WITH PORT 3 INTERNAL INTERRUPTS SDA SCL SU00166 LOGIC SYMBOL ADDRESS AND DATA BUS ADDRESS BUS T2 T2EX RxD TxD INT0 INT1 T0 T1 WR RD RST EA PSEN ALE VSS VDD XTAL1 XTAL2 SCL SDA SU00165 |
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