Features
80C51 Central Processing Unit
4KB On-Chip program memory
ISP capability; optional 1KB/2KB/4KB ISP memory shared with
data flash
memory.
IAP capability; up to 11K bytes programmable
data flash
available shared with ISP memory.
On-Chip 256 bytes scratch-pad RAM and 256 bytes auxiliary RAM; Be capable of addressing up to
64K bytes external memory
MOVC-disabling, encrypting, and locking flash memory realize security mechanism.
Three 16-bits timer/counter, Timer2 is an up/down counter with programmable clock output on P1.0
Eight sources, four-level-priority interrupt capability
Enhanced UART, provides frame-error detection and hardware address-recognition
Dual DPTR for fast-accessing of data memory
15 bits Watch-Dog-Timer with 8-bits pre-scalar, one-time enabled
Power control: Idle mode and Power-Down mode; Power-Down can be woken-up by
P3.2/P3.3/P4.2/P4.3
Low EMI: inhibits ALE emission
Four 8-bits bi-directional ports; extra four-bits additional P4 are available for PLCC-44 and
PQPF-44
On-Chip flash program/data memory:
- The data endurance of the embedded flash gets over 20,000 times.
- Greater than 100 years data rentention under room temperature
Operating Voltage:
- 4.5V~5.5V for MPC89E51A
- 2.4V~3.6V for MPC89L51A, minimum 2.7V requirement in flash write operation (ISP/ICP/…...)
- Built-in Low-Voltage-Reset circuit.
Operating Temperature
- Industrial (-40°C to +85°C)*
Maximum Operating Frequency:
- Optional 12T or 6T mode
- Up to 48MHz@12T or 24MHz@6T, Industrial range
Three package types:
- PDIP 40: MPC89x51AE
- PLCC 44: MPC89x51AP
- PQFP 44: MPC89x51AF
*: Tested by sampling
2
MPC89x51A Data Sheet
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