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P89LV51RB2/RC2/RD2
8-bit 80C51 3 V low power 16/32/64 kB flash microcontroller with 1 kB RAM
Rev. 05 — 15 December 2009 Product data sheet
1. General description
The P89LV51RB2/RC2/RD2 are 80C51 microcontrollers with 16/32/64 kB flash and 1024 B of data RAM. A key feature of the P89LV51RB2/RC2/RD2 is its X2 mode option. The design engineer can choose to run the application with the conventional 80C51 clock rate (12 clocks per machine cycle) or select the X2 mode (six clocks per machine cycle) to achieve twice the throughput at the same clock frequency. Another way to benefit from this feature is to keep the same performance by reducing the clock frequency by half, thus dramatically reducing the EMI. The flash program memory supports both parallel programming and in serial ISP. Parallel programming mode offers gang-programming at high speed, reducing programming costs and time to market. ISP allows a device to be reprogrammed in the end product under software control. The capability to field/update the application firmware makes a wide range of applications possible. The P89LV51RB2/RC2/RD2 is also capable of IAP, allowing the flash program memory to be reconfigured even while the application is running.
2. Features
I I I I I I I I I I I I I 80C51 CPU 3 V operating voltage from 0 MHz to 33 MHz 16/32/64 kB of on-chip flash user code memory with ISP and IAP Supports 12-clock (default) or 6-clock mode selection via software or ISP SPI and enhanced UART PCA with PWM and capture/compare functions Four 8-bit I/O ports with three high-current port 1 pins (16 mA each) Three 16-bit timers/counters Programmable watchdog timer Eight interrupt sources with four priority levels Second DPTR register Low EMI mode (ALE inhibit) TTL- and CMOS-compatible logic levels
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NXP Semiconductors
P89LV51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
I Brownout detection I Low power modes N Power-down mode with external interrupt wake-up N Idle mode I PLCC44 and TQFP44 packages
3. Ordering information
Table 1. Ordering information Package Name P89LV51RB2BA P89LV51RC2FBC P89LV51RD2FA P89LV51RD2BBC PLCC44 TQFP44 PLCC44 TQFP44 Description plastic leaded chip carrier; 44 leads plastic thin quad flat package; 44 leads; body 10 × 10 × 1.0 mm plastic leaded chip carrier; 44 leads plastic thin quad flat package; 44 leads; body 10 × 10 × 1.0 mm Version SOT187-2 SOT376-1 SOT187-2 SOT376-1 Type number
3.1 Ordering options
Table 2. Ordering options Flash memory 16 kB 32 kB 64 kB 64 kB Temperature range 0 °C to +70 °C −40 °C to +85 °C −40 °C to +85 °C 0 °C to +70 °C Frequency 0 MHz to 40 MHz Type number P89LV51RB2BA P89LV51RC2FBC P89LV51RD2FA P89LV51RD2BBC
P89LV51RB2_RC2_RD2_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 15 December 2009
2 of 76
www.DataSheet4U.com
NXP Semiconductors
P89LV51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
4. Block diagram
P89LV51RB2/RC2/RD2
HIGH PERFORMANCE 80C51 CPU
16/32/64 kB C.