P89CV51RB2/RC2/RD2

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.

Features

Principal features

• Supports 12-clock (default) or 6-clock mode selection via ISP or parallel programmer
• 6-clock/12-clock mode programmable "on-the-fly" by an SFR bit
• Peripherals (PCA, timers, UART) may use either 6-clock or 12-clock mode while the CPU is in 6-clock mode
• 128-B page erase for efficient use of code memory as non-volatile data storage
• 0 MHz to 40 MHz operating frequency in 12x mode, 20 MHz in 6x mode
• 16/32/64 kB of on-chip flash user-code memory with ISP and IAP
• 1 kB RAM
• SPI (Serial Peripheral Interface) and enhanced UART
• PCA (Programmable Counter Array) with PWM and capture/compare functions
• Three 16-bit timers/counters

Additional features

• Four 8-bit I/O ports
• WatchDog Timer (WDT)
• 30 ms page erase, 150 ms block erase
• PLCC44 and TQFP44 packages
• Ten interrupt sources with four priority levels
• Second DPTR register
• Low EMI mode (ALE inhibit)
• Power-down mode with external interrupt wake-up
• Idle mode

Comparison to P89C51RB2/RC2/RD2 devices

• SPI: The P89CV51RB2/RC2/RD2 devices have an SPI interface that was not present on the P89C51RB2/RC2/RD2 devices.
• 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.
• 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.
• 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.
• Larger RAM size: RAM size increased from 512 B to 1 kB.

Products/packages

Pricing/ordering/availability

Applications

Related applications
Digital media adapters
LCD display - discretes focus
PDA - discretes focus
HID
Projector
Intelligent washing machine
Transceiver board
Power amplifier board
Main CPU board
Walkie-talkie - MMS functionality
LCD TV - MMS functionality
Color mixing for RGBA LEDs

Technical documents

Application Notes

AN10155_1; AN10155: Philips LPC9xx microcontroller in I2C applications (21-Jun-02)

AN10289_1; LPC900 external crystal start-up (27-Apr-04)

AN10302_4; Using the Philips LPC2000 Flash utility with the Keil MCB2100 and IAR LPC210x Kickstart evaluation boards (12-Oct-06)

AN10342_1; Using LPC900 code Flash as data storage (13-Dec-04)

Support Documents

flash_as_datastorage_lpc900; Flash as Data storage LPC900.zip (17-Dec-04)

TN06004_LPC2000_ADC.pdf10; LPC2000 ADC code example (2006-03-27)

TN06002_LPC2000_EINT; LPC2000 EINT dual edge interrupts (2006-02-22)

TN06005_LPC2000_I2C; LPC2000 I2C slave code example (2006-04-21)

TN06008_LPC2000_SPI; LPC2000 SPI slave code example (2006-06-16)

MACC06001_LPC2000_SPI; LPC2xxx SPI master code example (2006-01-20)

MACC05007_LPC2000_UART; LPC2xxx UART transmitter code example (2005-09-19)

TN06003_LPC900_Resonator; LPC900 Mechanical stress on resonator (2006-03-30)

li_ion_battery_charger; Li-ion Battery charger (17-Dec-04)

75015973; NXP 5-V 80C51 Flash microcontrollers P89CV51Rx2 with ISP and IAP (2007-05-01)

MACC05009_P89V51Rx2; P89(L)V51Rx2 Code security (2005-11-25)

75016051; The choice for embedded technologies (2007-07-01)

TN06007_V51RX2_Migration; V51RX2 Migration (2006-06-01)

TN06006_V66x_Migration; V66x Migration (2006-06-01)

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