
W78LE365
7.4 Oscillator Control
W78LE365/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. ELECTRICAL CHARACTERISTICS
8.1 Absolute Maximum Ratings
PARAMETER
SYMBOL
V
DD
V
SS
V
IN
T
A
T
ST
MIN.
-0.3
V
SS
-0.3
0
-55
MAX.
+6.0
V
DD
+0.3
70
+150
UNIT
V
V
°
C
°
C
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
Note:
Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
8.2 D.C. Characteristics
(V
SS
= 0v, T
A
= 25
°
C, unless otherwise specified.)
SPECIFICATION
MIN.
MAX.
2.4
5.5
2.7
5.5
-
20
2.5
-
6
1
-
10
-
10
SYMBOL
PARAMETER
UNIT
V
V
mA
mA
mA
mA
μ
A
μ
A
TEST CONDITIONS
Without ISP
With ISP
No load V
DD
= 5.5V
No load V
DD
= 2.4V
V
DD
= 5.5V, Fosc = 20 MHz
V
DD
= 2.4V, Fosc = 12 MHz
V
DD
= 5.5V, Fosc = 20 MHz
V
DD
= 2.4V, Fosc = 12 MHz
V
DD
= 5.5V or 2.4V,
V
IN
= 0V or V
DD
V
DD
= 5.5V, 0<V
IN
<V
DD
V
DD
= 2.4V, 0<V
IN
<V
DD
V
DD
= 5.5V or 2.4 V
0V<V
IN
<V
DD
V
DD
= 5.5V, V
IN
= 1.4V
V
DD
Operating Voltage
I
DD
Operating Current
I
IDLE
Idle Current
I
PWDN
Power Down Current
I
IN1
Input Current
P1, P2, P3, P4
Input Current
RST
Input Leakage Current
-50
+10
μ
A
-10
-10
+150
50
μ
A
μ
A
I
IN2
I
LK
P0,
EA
-10
+10
μ
A
-500
-200
μ
A
I
TL
[*4]
Logic 1 to 0 Transition Current
P1, P2, P3, P4
-50
-30
μ
A
V
DD
= 2.4V, V
IN
= 0.92V
Publication Release Date: August 5, 2004
- 25 -
Revision A2