參數(shù)資料
型號(hào): μPD784225
廠商: NEC Corp.
英文描述: 16 Bit Single Chip Microcontrollers(16 位單片微控制器)
中文描述: 16位單片機(jī)微控制器(16位單片微控制器)
文件頁(yè)數(shù): 52/68頁(yè)
文件大?。?/td> 384K
代理商: ΜPD784225
52
m
PD784224, 784225
12. ROM CORRECTION
ROM correction is a function to replace part of the program in the internal ROM with a program in the internal
RAM.
By using the ROM correction function, instruction bugs found in the internal ROM can be avoided or the flow of
the program can be changed.
ROM correction can be used at up to four places in the internal ROM (program).
Figure 12-1. Block Diagram of ROM Correction
CORENn CORCHm
Program counter (PC)
Comparator
Correction address pointer n
Correction address registers
(CORAH, CORAL)
Coincidence
Correction branch processing
request signal
(CALLT instruction)
Internal bus
ROM correction control register (CORC)
Remark
n = 0 to 3, m = 0 or 1
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