
Preliminary W79E225A/227A Data Sheet
Publication Release Date: December 14, 2007
- 184 -
Revision A2.0
DC Characteristics, continued
SPECIFICATION
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
TEST CONDITIONS
I
SR11
-22
-31
-42
V
DD
= 4.5V, V
S
= 2.4V
Source Current
P2.0~P2.5, P5.0~P5.1
(PUSH-PULL Mode)
PWM pins
Source Current P1, P2,
P3,
P4,
P5
bidirectional mode)
Sink Current P2.0~P2.5,
P5.0~P5.1 (PUSH-PULL
Mode)
Sink Current P0,P1,P2,
P3,P4,P5
bidirectional mode)
Output
Low
P2.0~P2.5,
(PUSH-PULL Mode)
Output Low Voltage P0,
P1, P2, P3, P4, P5
(Quasi-bidirectional
Mode)
Output
High
P2.0~P2.5,
(PUSH-PULL Mode)
Output High Voltage P1,
P2, P3, P4, P5, P6, P7
(Quasi-bidirectional
Mode)
Sink current
[*2]
P0, P2,
ALE, /PSEN
I
SR12
-6
-9
-13
mA
V
DD
= 2.7V, V
S
= 2.0V
I
SR21
-200
-300
-430
V
DD
= 4.5V, V
S
= 2.4V
(Quasi-
I
SR22
-50
-82
-115
uA
V
DD
=2.7V, V
S
= 2.0V
I
SK11
18
22
32
V
DD
= 4.5V, V
S
= 0.45V
I
SK12
10
15
25
mA
V
DD
= 2.7V, V
S
= 0.45V
I
SK21
4
5
6
V
DD
= 4.5V, V
S
= 0.45V
(Quasi-
I
SK22
3
3.5
5
mA
V
DD
= 2.7V, V
S
= 0.45V
V
OL11
-
0.35
-
V
DD
= 4.5V, I
OL
= 20 mA
Voltage
P5.0~P5.1
V
OL12
-
0.07
-
V
V
DD
= 2.7V, I
OL
= 3.2 mA
V
OL21
-
0.35
-
V
DD
= 4.5V, I
OL
= 4.0 mA
V
OL22
-
0.35
-
V
V
DD
= 2.7V, I
OL
= 3.0 mA
V
OH11
-
3.3
-
V
DD
= 4.5V, I
OH
= -20mA
Voltage
P5.0~P5.1
V
OH12
-
2.5
-
V
V
DD
= 2.7V, I
OH
=-3.2mA
V
OH21
-
4.1
-
V
DD
= 4.5V, I
OH
=-100uA
V
OH22
-
2.52
-
V
V
DD
= 2.7V, I
OH
= -30uA
Isk31
Isk32
Isr31
Isr32
3
5
8
6
-9
-3
mA
mA
mA
mA
V
DD
=4.5V, Vs = 0.45V
V
DD
=2.7V, Vs = 0.45V
V
DD
=4.5V, Vs = 2.4V
V
DD
=2.7V, Vs = 2.0V
2.5
-6
-1
3.5
-7.5
-2
Source current
P2, ALE, /PSEN
[*2]
P0,
Notes:
*1. RST pin is a Schmitt trigger input. RST has internal pull-low resistors about 60k
Ω
.
*2. P0, P2, ALE and /PSEN are tested in the external access mode.
*3. XTAL1 is a CMOS input.
*4. Pins of P1, P2, P3, P4, P5 can source a transition current when they are being externally driven from 1 to 0. The
transition current reaches its maximum value when VIN approximates to 2V.