參數(shù)資料
型號(hào): W78L052A
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁(yè)數(shù): 11/26頁(yè)
文件大?。?/td> 214K
代理商: W78L052A
W78LE52/W78L052A
Publication Release Date: November 6, 2006
- 11 -
Revision A6
Erase Verify Operation
After an erase operation, all of the bytes in the chip must be verified to check whether they have been
successfully erased to 1 or not. The erase verify operation automatically ensures a substantial erase
margin. This operation will be done after the erase operation if V
PP
= V
EP
(14.5V),
CE
is high and
OE
is low.
PROGRAM/ERASE INHIBIT OPERATION
This operation allows parallel erasing or programming of multiple chips with different data. When
P3.6(
CE
) = V
IH
, P3.7(
OE
) = V
IH
, erasing or programming of non-targeted chips is inhibited. So,
except for the P3.6 and P3.7 pins, the individual chips may have common inputs.
OPERATIONS
P3.0
(A9
CTRL)
P3.1
(A13
CTRL)
P3.2
(A14
CTRL)
P3.3
(OE
CTRL)
P3.6
(
ERRO
R!
OBJEC
TS
CANN
OT BE
CREAT
ED
FROM
EDITIN
G
FIELD
CODE
S.
)
P3.7
(
OE
)
ERRO
R!
OBJEC
TS
CANN
OT BE
CREAT
ED
FROM
EDITIN
G
FIELD
CODE
S.
(VPP)
P2, P1
(A15..A0)
P0
(D7..D0)
NOTE
Read
0
0
0
0
0
0
1
Address Data Out
Output Disable
0
0
0
0
0
1
1
X
Hi-Z
Program
0
0
0
0
0
1
V
CP
Address
Data In
Program Verify
0
0
0
0
1
0
V
CP
Address Data Out
@3
Erase
1
0
0
0
0
1
V
EP
A0: 0,
others: X
Data In
0FFH
@4
Erase Verify
1
0
0
0
1
0
V
EP
Address Data Out
@5
Program/Erase
Inhibit
X
0
0
0
1
1
V
CP
/
V
EP
X
X
Notes:
1. All these operations happen in RST = V
IH
, ALE = V
IL
and
PSEN
= V
IH
.
2. V
CP
= 12.5V, V
EP
= 14.5V, V
IH
= V
DD
, V
IL
= Vss.
3. The program verify operation follows behind the program operation.
4. This erase operation will erase all the on-chip Flash EPROM cells and the Security bits.
5. The erase verify operation follows behind the erase operation.
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