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
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
京公网安备 11010802033920号
EEWORLD
