SC8521 View Datasheet(PDF) - Silan Microelectronics
Part Name
Description
Manufacturer
SC8521 Datasheet PDF : 16 Pages
| |||
Silan
Semiconductors
SC8521
ELECTRICAL CHARACTERISTICS (Tamb=25°C, unless otherwise specified)
Symbol
Parameter Test condition
Min
Type
Operating supply voltage
VDD
2.2
--
Supply current
IDD
VDD=3V; TA=25°C
--
--
Quiescent current
IDD(q)
VDD=3V; TA=25°C
--
--
Operating ambient temperature
TA
-10
--
Sense lines (input only and will have a weak internal pull-up resistance)
LOW level input voltage
VIL
--
--
HIGH level input voltage
VIH
0.7VDD
--
Pull-up resistance
Rpu
VDD=3V
50
--
Driver lines (output only; open drain; maximum on-resistance when LOW)
Maximum on-resistance
Ron
VDD=3V
--
--
Output drive (has a weak pull-up resistance)
Source current
Isink
VDD=3V; VO=1.5V 3.5
4.5
Max
4.5
2
1
+50
Unit
V
mA
µA
°C
0.3VDD V
--
V
100
KΩ
2
KΩ
5.5
mA
PIN DESCRIPTION
20-pin dual in-line and small outline package (SO-20)
Pin No.
Symbol
Description
1
XTAL1
Oscillator input
2
XTAL2
Oscillator output
3
SN7
Sense line 7 for key matrix
4
SN0
Sense line 0 for key matrix
5
SN1
Sense line 1 for key matrix
6
SN2
Sense line 2 for key matrix
7
SN3
Sense line 3 for key matrix
8
SN6
Sense line 6 for matrix
9
SN4
Sense line 4 for matrix
10
SN5
Sense line 5 for matrix
11
DR5
Drive line 5 for key matrix (active LOW)
12
DR4
Drive line 4 for key matrix (active LOW)
13
DR3
Drive line 3 for key matrix (active LOW)
14
DR2
Drive line 2 for key matrix (active LOW)
15
DR1
Drive line 1 for key matrix (active LOW)
16
DR0
Drive line 0 for key matrix (active LOW)
To be continued
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.3
3
2002.03.01
Share Link: 