Fig. 25.3 Example Of Data Programming Procedure - Fujitsu MB90420/5 (A) Series Hardware Manual

MB90420/5 (A) SERIES F
——
Data
Programming error

Fig. 25.3 Example of Data Programming Procedure

2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
Start
FMCS: WE (bit 5)
Programming enabled
Program command sequence
1. FxAAAA ← XXAA
2. Fx5554 ← XX55
3. FxAAAA ← XXA0
Program address ← Program data
Internal address read
Data polling (DQ7)
——
Data
0
Timing limit (DQ5)
1
Internal address read
Data polling (DQ7)
Data
Last address
FMCS: WE (bit 5)
Programming disabled
Programming
completed
25-18
Next address
Data
Check by hardware
sequence flag