參數(shù)資料
型號: UPD754244
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 4位單晶片微控制器
文件頁數(shù): 18/88頁
文件大小: 416K
代理商: UPD754244
18
μ
PD754144, 754244
6. EEPROM
The
μ
PD754244 incorporates 16 words
×
8 bit EEPROM (Electrically Erasable PROM) as well as static RAM
(128 words
×
4 bit) as a data memory.
The EEPROM incorporated into the
μ
PD754244 has the following features.
(1) Written data is retained if power is turned off.
(2) 8-bit data manipulation (auto-erase/auto-write) is available by memory manipulation instruction as well as
for static RAM. However available instructions are restricted.
(3) It can reduce loads of software because the auto-erase and/or auto-write operation is performed by
hardware.
(4) Write operation control using the interrupt request
The interrupt request is generated under following conditions.
Terminates write operation
Write status flag
It is possible to check whether enables or disables write operation by bit manipulation instructions.
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