November 9, 2006
Document No. 38-12023 Rev. *D
8
1.
Pin Information
This chapter describes, lists, and illustrates the CY8C27x43 automotive PSoC device pins and pinout configurations.
1.1
Pinouts
The CY8C27x43 automotive PSoC device is available in a variety of packages which are listed and illustrated in the following tables.
Every port pin (labeled with a “P”) is capable of Digital IO. However, Vss, Vdd, and XRES are not capable of Digital IO.
1.1.1
20-Pin Part Pinout
Table 1-1. 20-Pin Part Pinout (SSOP)
Pin
No.
Type
Pin
Name
Description
CY8C27243 20-Pin PSoC Device
Digital
Analog
1
IO
I
P0[7]
Analog column mux input.
2
IO
IO
P0[5]
Analog column mux input and column output.
3
IO
IO
P0[3]
Analog column mux input and column output.
4
IO
I
P0[1]
Analog column mux input.
5
Power
Vss
Ground connection.
6
IO
P1[7]
I2C Serial Clock (SCL).
7
IO
P1[5]
I2C Serial Data (SDA).
8
IO
P1[3]
9
IO
P1[1]
Crystal Input (XTALin), I2C Serial Clock
(SCL), ISSP-SCLK*.
10
Power
Vss
Ground connection.
11
IO
P1[0]
Crystal Output (XTALout), I2C Serial Data
(SDA), ISSP-SDATA*.
12
IO
P1[2]
13
IO
P1[4]
Optional External Clock Input (EXTCLK).
14
IO
P1[6]
15
Input
XRES
Active high external reset with internal pull
down.
16
IO
I
P0[0]
Analog column mux input.
17
IO
IO
P0[2]
Analog column mux input and column output.
18
IO
IO
P0[4]
Analog column mux input and column output.
19
IO
I
P0[6]
Analog column mux input.
20
Power
Vdd
Supply voltage.
LEGEND: A = Analog, I = Input, and O = Output.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Mixed-Signal Array Technical Reference Manual for details.
SSOP
Vdd
P0[6], A,I
P0[4], A,IO
P0[2], A,IO
P0[0], A,I
XRES
P1[6]
P1[4],EXTCLK
P1[2]
P1[0],XTALout,I2CSDA
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
A, I,P0[7]
A,IO, P0[5]
A,IO, P0[3]
A,I, P0[1]
I2CSCL,P1[7]
I2CSDA,P1[5]
P1[3]
I2CSCL,XTALin,P1[1]
Vss
Vss
[+] Feedback
[+] Feedback
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
