參數(shù)資料
型號: MC68HC916X1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 132/172頁
文件大小: 1035K
代理商: MC68HC916X1
MOTOROLA
132
MC68HC916X1
MC68HC916X1TS/D
Figure 23 Erasure Flow
FEEPROM PGM FLOW2 TD
n
ep
COUNTER = 5
ARRAY FAILED
TO ERASE
CLEAR LAT
REDUCE VFPE TO
NORMAL READ LEVEL,
EXIT ERASE ROUTINE
REDUCE VFPE TO
PROGRAM/ERASE/VERIFY LEVEL
CLEAR n
COUNTER,
CLEAR MARGIN FLAG
SET LAT,
SET ERAS
WRITE TO ARRAY
OR CONTROL BLOCK
SET ENPE
START ERASE PULSE
TIMER (t
epk
)
DELAY FOR t
epk
CLEAR ENPE,
START t
pr
TIMER
DELAY FOR t
pr
MARGIN FLAG
SET
Y
N
1
1
2
NOTES:
1. SEE ELECTRICAL CHARACTERISTICS FOR V
FPE
PIN VOLTAGE SEQUENCING.
2. THE MARGIN FLAG IS A SOFTWARE-DEFINED FLAG THAT INDICATES WHETHER
THE PROGRAM SEQUENCE IS GENERATING ERASE PULSES OR MARGIN PULSES.
N
Y
READ ARRAY AND SHADOW
REGISTERS TO VERIFY ERASE
ALL LOCATIONS
ERASED
N
Y
CALCULATE EM,
SET MARGIN FLAG
SET t
epk
= EM
INCREMENT n
ep
COUNTER
CALCULATE NEW
t
epk
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