Page 1
Tel : 886-2-29162151
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
16-Bit I/O Expander IC PT8300
DESCRIPTION
PT8300 is an I/O expander utilizing CMOS Technology providing 16 bits serial input-parallel output and
8 bits parallel input-serial output shift register function. 8 input pins or 16 output pins can be configured
to a cascading or parallel structure. Reading of serial data during the parallel to serial data conversion is
enabled by the built-in independent registers for serial input to parallel output and parallel input to serial
output. Housed in 28 pins, SO Package, PT8300 provides 8 input or 16 output pins which can be configured into a cascading structure. Pin assignments and application circuits are optimized for easy PCB
layout and cost saving benefits.
FEATURES
• CMOS Technology
• Low Power Consumption:
• Wide Operating Supply Voltage Range: VDD=3 to 5.5V
• Wide Operating Temperature Range: Ta=-20 to +75oC
• Reading of the Serial Data during Parallel to Serial Data Conversion
• 8 Output Pins or 8 Input/ Output Pins provided
• Schmitt Triggered Inputs (DI1,DI2,CLK,LATCH, /RESET,PULLUP)
• Parallel Data Inputs provided (P8 to P15)
• Open Drain with selectable pull up resistance ports provided (P8 to P15)
• Normal Output Ports provided (P0 to P7)
• Port Extension is supported
APPLICATIONS
• MCU Peripheral Device
• Serial Bus System Data Communication
PT 8300 v 1.0 1 Updated Oct. 2000
Page 2
Tel : 886-2-29162151
Princeton Technology Corp.
URL: http://www.princeton.com.tw
16-Bit I/O Expander IC PT8300
PIN CONFIGURATION
Fax: 886-2-29174598
VSS
/RES ET
CLK
LATCH
P15
P14
P13
P12
P11
P10
P9
P8
LATCHO
1
2
3
4
5
6
7
8
9
10
11
12
13
28
27
26
25
24
23
22
21
20
19
18
17
16
VDD
PULLUP
DI1
DO2
P0
P1
P2
P3
P4
P5
P6
P7
DI2
CLKO
PT 8300 v 1.0 2 Updated Oct. 2000
14
15
DO1
Page 3
Tel : 886-2-29162151
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
16-Bit I/O Expander IC PT8300
APPLICATION CIRICUIT 1
5V
P8 TO P15
VSS
/R E S E T
CLK
LATCH
P15
P14
P13
P12
P11
P10
P9
P8
LATCHO
CLKO
VCC
PULLUP
DI1
DO2
P0
P1
P2
P3
P4
P5
P6
P7
DI2
DO1
P0 TO P7
MCU
PT 8300 v 1.0 3 Updated Oct. 2000
Page 4
Tel : 886-2-29162151
Princeton Technology Corp.
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
16-Bit I/O Expander IC PT8300
APPLICATION CIRCUIT 2
OUTPUT
P0toP7
P0
PT8300
5V 5V 5V
I/O PO RT
VCC VCC VCC
VSS VSS VSS
PT8300
I/O PO RT
PT8300
P8 P8 P8
P8 to P15
P0toP7
P0
P8 to P15
OUTPUT
P0toP7
P0
OUTPUT
P7 P7
P7
P15 P15 P1 5
DI2 DI2 DI2
DO1 DO1 DO1
/RESET /RESET /RESET
PULLUP PULLUP PULLUP
DI1 DI1 DI1
DO2 DO2 DO2
CLK CLK CLKCLKO CLKO CLKO
LATCH LATCH LATCHLATCHO LATCHO LATCHO
MCU
P8 to P15
I/O PO RT
PT 8300 v 1.0 4 Updated Oct. 2000
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