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NXP Semiconductors Electronic Components Datasheet

P89CV51RD2 Datasheet

Microcontroller

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P89CV51RB2/RC2/RD2
8-bit 80C51 5 V low power 64 kB flash microcontroller with
1 kB RAM, SPI, 6-clock CPU with 6/12-clock peripherals
Rev. 03 — 25 August 2009
Product data sheet
1. General description
The P89CV51RB2/RC2/RD2 are three types of 80C51 microcontroller with respectively
16 kB/32 kB/64 kB flash and 1 kB of data RAM. These devices are designed to be drop-in
and software-compatible replacements for the popular P89C51RB2/RC2/RD2 devices.
Both the In-System Programming (ISP) and In-Application Programming (IAP) boot codes
are upward compatible.
Additional features of the P89CV51RB2/RC2/RD2 devices compared to the
P89C51RB2/RC2/RD2 are the inclusion of an SPI interface, larger RAM size, and the
ability to erase code memory in 128-B page blocks.
The IAP capability combined with the 128-B page size allows for efficient use of the code
memory for non-volatile data storage.
2. Features
2.1 Principal features
I Supports 12-clock (default) or 6-clock mode selection via ISP or parallel programmer
I 6-clock/12-clock mode programmable “on-the-fly” by an SFR bit
I Peripherals (PCA, timers, UART) may use either 6-clock or 12-clock mode while the
CPU is in 6-clock mode
I 128-B page erase for efficient use of code memory as non-volatile data storage
I 0 MHz to 40 MHz operating frequency in 12× mode, 20 MHz in 6× mode
I 16/32/64 kB of on-chip flash user-code memory with ISP and IAP
I 1 kB RAM
I SPI (Serial Peripheral Interface) and enhanced UART
I PCA (Programmable Counter Array) with PWM and capture/compare functions
I Three 16-bit timers/counters
2.2 Additional features
I Four 8-bit I/O ports
I WatchDog Timer (WDT)
I 30 ms page erase, 150 ms block erase
I PLCC44 and TQFP44 packages
I Ten interrupt sources with four priority levels
I Second DPTR register
I Low EMI mode (ALE inhibit)


NXP Semiconductors Electronic Components Datasheet

P89CV51RD2 Datasheet

Microcontroller

No Preview Available !

NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
I Power-down mode with external interrupt wake-up
I Idle mode
2.3 Comparison to P89C51RB2/RC2/RD2 devices
I SPI: The P89CV51RB2/RC2/RD2 devices have an SPI interface that was not present
on the P89C51RB2/RC2/RD2 devices.
I Smaller block size: The page size decreased from 4 kB to 128 B. These smaller
pages can be erased and reprogrammed using IAP function calls, which makes
practical use of code memory for non-volatile data storage. A page is erased in 30 ms
or less. IAP and ISP code both support 128-B page operations. The IAP and ISP code
uses multiple page-erase operations to emulate the erasing of larger block sizes (8 kB
and 16 kB) to maintain firmware compatibility.
I Status bit replaces Status byte: Automatic entry into ISP mode following a reset is
now controlled by one status bit. Its operation is almost identical to that used by the
previous devices, which was based on the zero/non-zero value of the status byte.
I Faster block erase: The erase time for the entire user-code memory of the
P89CV51RB2/RC2/RD2 devices is 150 ms, which is a significant improvement.
I Larger RAM size: RAM size increased from 512 B to 1 kB.
3. Ordering information
Table 1. Ordering information
Type number
Package
Name
Description
P89CV51RB2FA
PLCC44 plastic leaded chip carrier; 44 leads
P89CV51RB2FBC
TQFP44
plastic thin quad flat package; 44 leads; body
10 × 10 × 1.0 mm
P89CV51RC2FA
PLCC44 plastic leaded chip carrier; 44 leads
P89CV51RC2FBC TQFP44
plastic thin quad flat package; 44 leads; body
10 × 10 × 1.0 mm
P89CV51RD2FA
PLCC44 plastic leaded chip carrier; 44 leads
P89CV51RD2FBC TQFP44
plastic thin quad flat package; 44 leads; body
10 × 10 × 1.0 mm
Version
SOT187-2
SOT376-1
SOT187-2
SOT376-1
SOT187-2
SOT376-1
3.1 Ordering options
Table 2. Ordering options
Type number
Flash
memory
P89CV51RB2FA
16 kB
P89CV51RB2FBC
P89CV51RC2FA
32 kB
P89CV51RC2FBC
P89CV51RD2FA
64 kB
P89CV51RD2FBC
RAM
1 kB
1 kB
1 kB
Temperature
range
40 °C to +85 °C
Frequency
0 MHz to 40 MHz
P89CV51RB2_RC2_RD2_3
Product data sheet
Rev. 03 — 25 August 2009
© NXP B.V. 2009. All rights reserved.
2 of 76


Part Number P89CV51RD2
Description Microcontroller
Maker NXP Semiconductors
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