w78l812a Winbond Electronics Corp America, w78l812a Datasheet - Page 18

• Manufacturer Part Number: w78l812a
• Description: 8-bit Mcu Series 80c51-based
• Manufacturer: Winbond Electronics Corp America

6.8.3
This bit is used to enable/disable the encryption logic for code protection. Once encryption feature is
enabled, the data presented on port 0 will be encoded via encryption logic. Only whole chip erase will
reset this bit.
7. ABSOLUTE MAXIMUM RATINGS
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
A0 to A7
of the device.
V
V
V
V
V
V
IH
IL
IL
IL
IL
IL
Encryption
Programming Configuration
PARAMETER
P1
P3.0
P3.1
P3.2
P3.3
P3.6
P3.7
X'tal1
X'tal2
Vss
EA/Vpp
PSEN
ALE
RST
V
P2
P0
DD
+5V
PGM DATA
V
V
V
V
A8 to A15
IH
CP
IL
IH
V
SYMBOL
DD
TST
VIN
T
− V
a
- 18 -
SS
A0 to A7
V
SS
W78LE812/W78L812A
V
V
V
V
V
V
MIN.
-0.3
-55
IL
IL
IL
IL
IH
IL
0
-0.3
Programming Verification
P1
P3.0
P3.1
P3.2
P3.3
P3.6
P3.7
X'tal1
X'tal2
Vss
V
DD
MAX.
+150
EA/Vpp
+7.0
70
PSEN
RST
ALE
+0.3
V
P0
P2
DD
+5V
PGM DATA
V
V
V
V
A8 to A15
CP
IL
IH
IH
UNIT
°C
°C
V
V