P89CV51RB2_RC2_RD2_3 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 03 — 25 August 2009 2 of 76
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
n Power-down mode with external interrupt wake-up
n Idle mode
2.3 Comparison to P89C51RB2/RC2/RD2 devices
n SPI: The P89CV51RB2/RC2/RD2 devices have an SPI interface that was not present
on the P89C51RB2/RC2/RD2 devices.
n 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.
n 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.
n 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.
n Larger RAM size: RAM size increased from 512 B to 1 kB.
3. Ordering information
3.1 Ordering options
Table 1. Ordering information
Type number Package
Name Description Version
P89CV51RB2FA PLCC44 plastic leaded chip carrier; 44 leads SOT187-2
P89CV51RB2FBC TQFP44 plastic thin quad flat package; 44 leads; body
10 × 10 × 1.0 mm
SOT376-1
P89CV51RC2FA PLCC44 plastic leaded chip carrier; 44 leads SOT187-2
P89CV51RC2FBC TQFP44 plastic thin quad flat package; 44 leads; body
10 × 10 × 1.0 mm
SOT376-1
P89CV51RD2FA PLCC44 plastic leaded chip carrier; 44 leads SOT187-2
P89CV51RD2FBC TQFP44 plastic thin quad flat package; 44 leads; body
10 × 10 × 1.0 mm
SOT376-1
Table 2. Ordering options
Type number Flash
memory
RAM Temperature
range
Frequency
P89CV51RB2FA 16 kB 1 kB −40 °C to +85 °C 0 MHz to 40 MHz
P89CV51RB2FBC
P89CV51RC2FA 32 kB 1 kB
P89CV51RC2FBC
P89CV51RD2FA 64 kB 1 kB
P89CV51RD2FBC
