p87c51rb2fa NXP Semiconductors, p87c51rb2fa Datasheet - Page 2

• Manufacturer Part Number: p87c51rb2fa
• Description: 80c51 8-bit Microcontroller Family
• Manufacturer: NXP Semiconductors

Philips Semiconductors
DESCRIPTION
The devices are Single-Chip 8-Bit Microcontrollers manufactured in
an advanced CMOS process and are derivatives of the 80C51
microcontroller family. The instruction set is 100% compatible with
the 80C51 instruction set.
The devices support 6-clock/12-clock mode selection by
programming an OTP bit (OX2) using parallel programming. In
addition, an SFR bit (X2) in the clock control register (CKCON)
also selects between 6-clock/12-clock mode.
The devices also have four 8-bit I/O ports, three 16-bit timer/event
counters, a multi-source, four-priority-level, nested interrupt structure,
an enhanced UART and on-chip oscillator and timing circuits.
The added features of the P87C51RA2/RB2/RC2/RD2 make it a
powerful microcontroller for applications that require pulse width
modulation, high-speed I/O and up/down counting capabilities such
as motor control.
FEATURES
2003 Jan 24
80C51 Central Processing Unit
– 8 kbytes OTP (87C51RA2)
– 16 kbytes OTP (87C51RB2)
– 32 kbytes OTP (87C51RC2)
– 64 kbytes OTP (87C51RD2)
– 512 byte RAM (87C51RA2/RB2/RC2)
– 1 kbyte RAM (87C51RD2)
– Boolean processor
– Fully static operation
– Low voltage (2.7 V to 5.5 V at 16 MHz) operation
12-clock operation with selectable 6-clock operation (via software
or via parallel programmer)
Memory addressing capability
– Up to 64 kbytes ROM and 64 kbytes RAM
Power control modes:
– Clock can be stopped and resumed
– Idle mode
– Power-down mode
80C51 8-bit microcontroller family
with 512B/1KB RAM, low voltage (2.7 to 5.5 V), low power, high
speed (30/33 MHz)
8KB/16KB/32KB/64KB OTP
2
CMOS and TTL compatible
Two speed ranges at V
– 0 to 30 MHz with 6-clock operation
– 0 to 33 MHz with 12-clock operation
Parallel programming with 87C51 compatible hardware interface
to programmer
RAM expandable externally to 64 kbytes
Programmable Counter Array (PCA)
– PWM
– Capture/compare
PLCC, LQFP, or DIP package
Extended temperature ranges
Dual Data Pointers
Security bits (3 bits)
Encryption array - 64 bytes
Seven interrupt sources
4 interrupt priority levels
Four 8-bit I/O ports
Full-duplex enhanced UART
– Framing error detection
– Automatic address recognition
Three 16-bit timers/counters T0, T1 (standard 80C51) and
additional T2 (capture and compare)
Programmable clock-out pin
Asynchronous port reset
Low EMI (inhibit ALE, slew rate controlled outputs, and 6-clock
mode)
Wake-up from Power Down by an external interrupt
P87C51RA2/RB2/RC2/RD2
CC
= 5 V
853–2391 29335
Product data