S3C1840 Datasheet, PDF (4/91 Pages) Samsung semiconductor – 4-bit single-chip CMOS microcontroller

PIN CONFIGURATION (24 SOP)
S3C1840
VSS
XI
XO
P2.6
P0.0
P0.1
P0.2
P0.3
P1.0
P1.1
P1.2
P1.3
1
24
2
23
3
22
4
21
5
20
6 _S3C1840 19
7
18
8
17
9
16
10
15
11
14
12
13
VDD
P2.0/REM
TEST
P2.1
P2.2
P2.3
P2.4
P2.5
P3.0
P3.1
P3.2
P3.3
Figure 1-2. Pin Configuration (24 SOP)
Table 1-1. PIN Description for 24 PINS
Pin
Name
P0.0-P0.3
P1.0-P1.3
P2.0 REM
P2.2-P2.5
P2.1, P2.6
P3.0-P3.3
TEST
X_I
X_O
V_DD
V_SS
Pin
Number
5, 6, 7, 8
9, 10, 11, 12
23
20, 19, 18, 17
21, 4
16, 15, 14, 13
22
2
3
24
1
Pin
Type
Input
Input
Output
Output
Description
4-bit input port when P2.13 is low
4-bit input port when P2.13 is high
1-bit individual output for remote carrier
frequency ⁽¹⁾
1-bit individual output port
Output
Input
Input
Output
–
–
4-bit parallel output port
Input pin for test (Normally connected to V_SS)
Oscillation clock input
Oscillation clock output
Power supply
Ground
I/O Circuit
Type
A
A
B
C
D
C
–
–
–
–
–
NOTES:
1. The carrier can be selected by software as fxx/12 (1/3 duty), fxx/12 (1/4 duty), fxx/8 (1/2 duty), or no-carrier
frequency.
2. Package type can be selected as 24 SOP in the ordering sheet.
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