SX18AC/SO Parallax Inc, SX18AC/SO Datasheet - Page 4

• Manufacturer Part Number: SX18AC/SO
• Description: IC MCU 2K FLASH 50MHZ SO-18
• Manufacturer: Parallax Inc
• Series: SXr

Specifications of SX18AC/SO

• Core Processor: RISC
• Core Size: 8-Bit
• Speed: 50MHz
• Number Of I /o: 12
• Program Memory Size: 3KB (2K x 12)
• Program Memory Type: FLASH
• Ram Size: 137 x 8
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-SOIC
• Voltage - Supply (vcc/vdd): -
• Eeprom Size: -
• Data Converters: -
• Peripherals: -
• Connectivity: -

SX18AC / SX20AC / SX28AC
2.0 CONNECTION DIAGRAMS
2.1 Pin Assignments
2.2 Pin Descriptions
© 1998 Scenix Semiconductor, Inc. All rights reserved.
OSC1/In/Vpp
Note:I = input, O = output, I/O = Input/Output, P = Power, TTL = TTL input, CMOS = CMOS input, ST = Schmitt Trigger
RTCC
MCLR
OSC2/Out
RA2
RA3
RB0
RB1
RB2
RB3
Vss
MCLR
Name
RTCC
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
Vss
V
input, MIWU = Multi-Input Wakeup input
dd
SX 18-PIN
9
SDIP/SOIC
1
2
3
4
5
6
7
8
Pin Type Input Levels
18
17
16
15
14
13
12
11
10
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
P
P
I
I
I
OSC1
OSC2
V
RB7
RB6
RB5
RB4
RA1
RA0
dd
TTL/CMOS/ST Bidirectional I/O Pin; comparator output; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; comparator negative input; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; comparator positive input; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; MIWU input
TTL/CMOS/ST Bidirectional I/O Pin; MIWU input
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS/ST Bidirectional I/O pin
TTL/CMOS
TTL/CMOS
TTL/CMOS
TTL/CMOS
CMOS
RTCC
MCLR
ST
ST
ST
RA2
RA3
RB0
RB1
RB2
RB3
–
–
Vss
Vss
SX 20-PIN
9
10
1
2
3
4
5
6
7
8
SSOP
Bidirectional I/O Pin; symmetrical source / sink capability
Bidirectional I/O Pin; symmetrical source / sink capability
Bidirectional I/O Pin; symmetrical source / sink capability
Bidirectional I/O Pin; symmetrical source / sink capability
Input to Real-Time Clock/Counter
Master Clear reset input – active low
Crystal oscillator input – external clock source input
Crystal oscillator output – in R/C mode, internally pulled to V
pull-up
Positive supply pin
Ground pin
16
15
20
19
18
17
14
13
12
11
OSC1
OSC2
V
V
RB7
RB6
RB5
RB4
RA1
RA0
dd
dd
- 4 -
RTCC
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
V
Vss
n.c.
n.c.
dd
SDIP/SOIC
SX 28-PIN
9
10
11
12
13
14
1
2
3
4
5
6
7
8
Description
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MCLR
OSC1
OSC2
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RC0
RB7
RB6
RB5
RTCC
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
V
V
Vss
Vss
dd
dd
SX 28-PIN
9
10
11
12
13
14
1
2
3
4
5
6
7
8
dd
SSOP
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through weak
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MCLR
OSC1
OSC2
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RC0
RB7
RB6
RB5