w78e54 Winbond Electronics Corp America, w78e54 Datasheet - Page 12

• Manufacturer Part Number: w78e54
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

Program Operation
This operation is used to program data to the flash EEPROM and the option bits. Programming is
initiated when V
Program Verify Operation
All data must be checked after programming. This operation should be performed after each byte is
programmed, and it will ensure a substantial program margin.
Notes:
1. During all of these operations, RST = V
2. V
3. The program verify operation should follow the programming operaion.
ABSOLUTE MAXIMUM RATINGS
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
the device.
Read
Program
Program Verify
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
OPERATION
CP
= 12V, V
A0 to A7
PARAMETER
V
V
V
V
V
V
IL
IL
IL
IL
IL
IH
IH
Programming Configuration
= V
CTRL)
PP
P3.0
DD
(A9
V
V
V
IL
IL
IL
, V
reaches V
P1
P3.0
P3.1
P3.2
P3.3
P3.6
P3.7
X'tal1
X'tal2
Vss
IL
= Vss.
CTRL)
(A13
P3.1
V
V
V
IL
IL
IL
EA/Vpp
PSEN
CP
ALE
RST
V
P2
P0
DD
(12.5V) level, CE is set to low, and OE is set to high.
IH
CTRL)
(A14
P3.2
, ALE = V
V
V
V
IL
IL
IL
+5V
SYMBOL
V
DD
PGM DATA
T
V
V
V
V
V
A8 to A15
T
IH
CP
IL
IH
CTRL)
IL,
ST
IN
P3.3
A
(OE
V
V
V
V
and PSEN = V
IL
IL
IL
SS
- 12 -
( CE )
P3.6
V
V
V
IH
IL
IL
A0 to A7
IH
V
.
SS
MIN.
( OE )
-0.3
P3.7
-55
V
V
V
V
V
V
V
0
V
V
IH
IL
IL
-0.3
IL
IL
IL
IL
IH
IL
(V
V
V
EA
V
Programming Verification
PP
CP
CP
IH
P1
P3.0
P3.1
P3.2
P3.3
P3.6
P3.7
X'tal1
X'tal2
Vss
)
(A15 TO A0)
Address
Address
Address
V
P2, P1
DD
MAX.
+150
+7.0
EA/Vpp
70
PSEN
RST
ALE
+0.3
V
P0
P2
DD
Data Out
Data In
Data Out
(D7 TO D0)
+5V
P0
W78E54
PGM DATA
V
V
V
V
A8 to A15
CP
IL
IH
IH
UNIT
V
V
C
C
NOTES
1, 2
1, 2
3
of