NXP P89V51RD2 IC unlock

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NXP P89V51RD2 singlechip type:
P89V51RD2FA PLCC44
P89V51RD2FBC TQFP44
P89V51RD2BN PDIP40
NXP P89V51RD2 SCM overview:
P89V51RD2 is a 80C51 microcontroller with 64 KB flash memory and 1024 byte data RAM.
An important feature of P89V51RD2 is its X2 mode options. The design engineer can select the operating application and the traditional 80C51 clock rate (every 12 clock machine cycles), or select the X2 mode (6 clock per machine cycle) to achieve two times the throughput at the same clock frequency. Another way of benefiting from this feature
Is to maintain the same performance, by reducing the half of the clock frequency, thereby greatly reducing the EMI.
Flash program memory supports parallel and serial in system programming (ISP). Parallel programming provides high programming speed, reduced programming cost and time to market. ISP allows the device’s secondary products to be reprogrammed under the control of software. Ability
The wide application of field / update application firmware is possible. P89V51RD2 is in application programming (IAP), allowing reconfiguration of Flash program memory at any time, even when the application is running.
NXP P89V51RD2 singlechip characteristics:
80C51 central processing unit
5 V working voltage from 0 to 40 MHz
64 KB on chip flash memory, with ISP (in system programming) and IAP (in application programming)
Supports 12 clock (default) or 6 clock mode through software or ISP selection.
SPI (serial peripherals interface) and enhanced UART
PCA (programmable counter array) has PWM and capture / compare functions.
It has four 8 bit I/ O ports, 3 high current P1 ports (16 MA).
Three 16 bit timer / counter
Programmable Watchdog Timer (WDT)
Four priority 8 interrupt sources
N DPTR register
Low EMI mode (ALE suppression)
TTL and CMOS compatible logic levels
Undervoltage detection
Low power mode
Power off mode, external interruption wake-up
Idle mode
PDIP40, PLCC44, and TQFP44 encapsulation
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