W77IE58 Datasheet, PDF (77/90 Pages) Winbond – 8-BIT MICROCONTROLLER

Preliminary W77IE58
Program Verify Operation
All the programming data must be checked after program operations. This operation should be performed
after each byte is programmed; it will ensure a substantial program margin.
Erase Operation
An erase operation is the only way to change data from 0 to 1. This operation will erase all the FLASH
ROM cells and the security bits from 0 to 1. This erase operation is done when the VPP is reach to VEP
level, CE set to low, and OE set to high.
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 VPP = VEP(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 ) = VIH, P3.7( OE ) = VIH, 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.
Company/Device ID Read Operation
This operation is supported for FLASH ROM programmer to get the company ID or device ID on the
W77IE58.
Operations P3.0 P3.1 P3.2 P3.3 P3.6
(A9 (A13 (A14 (OE _{( CE )}
CTRL) CTRL) CTRL) CTRL)
Read
0
0
0
0
0
Output Disable 0
0
0
0
0
Program
0
0
0
0
0
Program Verify 0
0
0
0
1
Erase
1
0
0
0
0
Erase Verify
1
0
0
0
1
Program/Erase X
0
0
0
1
Inhibit
Company ID
1
0
0
0
0
Device ID
1
0
0
0
0
P3.7
( OE )
0
1
1
0
1
0
1
0
0
EA ^P2,P1
P0
(VPP) ^{(A15..A0) (D7..D0)}
1
1
VCP
VCP
VEP
VEP
VCP/
VEP
1
1
Address Data Out
X
Hi-Z
Address Data In
Address Data Out
A0:0, Data In
others: X 0FFH
Address Data Out
X
X
A0 = 0 Data Out
A0 = 1 Data Out
Note
@3
@4
@5
Notes:
1. All these operations happen in RST = VIH, ALE = VIL and PSEN = VIH.
2. VCP = 12.5V, VEP = 14.5V, VIH = VDD, VIL = VSS.
3. The program verify operation follows behind the program operation.
4. This erase operation will erase all the on-chip ROM cells and the Security bits.
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Publication Release Date: July 2000
Revision A1