參數(shù)資料
型號: MC68HC05P18A
廠商: Motorola, Inc.
英文描述: Low Cost HCMOS Microcontroller(低成本、8位HCMOS微控制器)
中文描述: 低成本HCMOS微控制器(低成本,8位HCMOS微控制器)
文件頁數(shù): 88/130頁
文件大小: 1200K
代理商: MC68HC05P18A
L
G
R
EEPROM
Technical Data
MC68HC05P18A
88
EEPROM
MOTOROLA
10.4 Programming/Erasing Procedures
To program a byte of EEPROM:
1.
Set EELAT = CPEN = 1.
2.
Set ER1 = ER0 = 0.
3.
Write data to the desired address.
4.
Set EEPGM for a time, t
EEPGM
.
Any bit should be erased before it is programmed. However, if
write/erase cycling is a concern, a procedure can be followed to
minimize the cycling of each bit in each EEPROM byte.
Here is the procedure:
If PB EB = 0 — Program the new data over the existing data
without erasing it first.
If PB EB
0 — Erase byte before programming.
Where:
PB = Byte data to be programmed
EB = Existing EEPROM byte data
To erase a
byte
of EEPROM:
1.
Set LATCH = 1, CPEN = 1, ER1 = 0, and ER0 = 1.
2.
Write to the address to be erased.
3.
Set EEPGM for a time, t
EBYT
.
To erase a
block
of EEPROM:
1.
Set LATCH = 1, CPEN = 1, ER1 = 1, and ER0 = 0.
2.
Write to any address in the block.
3.
Set EEPGM for a time, t
EBLOCK
.
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