W78E58B Winbond, W78E58B Datasheet - Page 18

• Manufacturer Part Number: W78E58B
• Description: 8 BIT MICROCONTROLLER
• Manufacturer: Winbond

Oscillator Control
W78E58B/E516 allow user to diminish the gain of on-chip oscillator amplifier by using programmer to
set the bit B7 of security register. Once B7 is set to 0, a half of gain will be decreased. Care must be
taken if user attempts to diminish the gain of oscillator amplifier, reducing a half of gain may improperly
affect the external crystal operation at high frequency above 24 MHz. The value of R and C1, C2 may
need some adjustment while running at lower gain.
8. ABSOLUTE MAXIMUM RATINGS
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
9. DC CHARACTERISTICS
(V
Operating Voltage
Operating Current
Idle Current
Power Down Current
Input Current
P1, P2, P3, P4
Input Current
RST
Input Leakage Current
P0, EA
Logic 1 to 0 Transition Current
P1, P2, P3, P4
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
DD
V
of the device.
SS
= 5V 10%, T
PARAMETER
PARAMETER
A
= 25 C, Fosc = 20 MHz, unless otherwise specified.)
I
SYM.
PWDN
I
I
V
TL
I
IDLE
I
I
I
IN1
IN2
DD
LK
DD
[*4]
V
SYMBOL
DD
MIN.
-500
4.5
-50
-10
-10
T
V
T
-
-
-
ST
IN
A
SPECIFICATION
- 18 -
V
SS
MAX.
+300
+10
+10
5.5
20
50
6
-
V
SS
MIN.
-0.3
-55
0
UNIT
mA
mA
-0.3
V
A
A
A
A
A
RST = 1, P0 = V
No load
V
Idle mode
V
Power-down mode
V
V
V
V
0V < V
V
0V < V
V
V
DD
DD
DD
DD
IN
DD
DD
DD
IN
= 0V or V
= 2.0V
V
TEST CONDITIONS
= 5.5V
= 5.5V
= 5.5V
= 5.5V
= 5.5V
= 5.5V
= 5.5V
DD
MAX.
+150
+6.0
IN
IN
70
+0.3
< V
< V
DD
DD
W78E58B
DD
DD
UNIT
V
V
C
C