W742S81A Datasheet, PDF (38/47 Pages) Winbond – 4 BIT MICROCONTROLLER

(Used as LCD output)
Port RE Sink Current
Port RE Source Current
DTMF Output DC level
DTMF Distortion
DTMF Output Voltage
Pre-emphasis
DTMF Output Sink Current
Pull-up Resistor
RES Pull-up Resistor
W742S81A
VLCD = 3.0V
IEL
VOL = 0.9V
9
-
-
mA
IEH
VOH = 2.4V
0.4
1.2
-
mA
VTDC RL=5KΩ, VDD=2.5 to 3.8V
1.1
-
2.8
V
THD RL=5KΩ, VDD=2.5 to 3.8V
-
-30
-23
dB
VTO
Low group, RL=5KΩ
130 150 170 mVrms
Col/Row
1
2
3
dB
ITL
VTO=0.5V
0.2
-
-
mA
RC
Port RC
100
350 1000
KΩ
RRES
-
20
100 500
KΩ
9. AC CHARACTERISTICS
PARAMETER
Op. Frequency
Instruction cycle time
Reset Active Width
Interrupt Active Width
SYM.
FOSC
TI
TRAW
TIAW
CONDITIONS
Crystal type
One machine cycle
FOSC=32.768 KHz
FOSC=32.768 KHz
MIN.
-
-
1
1
TYP.
3.58
4/FOSC
-
-
MAX.
-
-
-
-
UNIT
MHz
S
µS
µS
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