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參數(shù)資料
| 型號： | 935271535112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 256 X 8 EEPROM, 8 I/O, PIA-GENERAL PURPOSE, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, MO-153, SOT-360-1, TSSOP-20 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 125K |
| 代理商： | 935271535112 |
Philips Semiconductors
Product data
PCA9501
8-bit I2C and SMBus I/O port with interrupt,
2-kbit EEPROM and 6 address pins
2002 Sep 27
3
PIN CONFIGURATION
SW00903
A0
A1
A2
I/O0
I/O3
VDD
SDA
SCL
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
I/O1
I/O2
INT
WC
I/O7
I/O6
I/O5
I/O4
9
12
10
11
A5
VSS
A3
A4
PCA9501
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
NAME AND FUNCTION
1, 2, 3, 9, 11,
12
A0–5
Address lines (internal pull-up)
4, 5, 6, 7
I/O0–3
Quasi-bidirectional I/O pins
8
INT
Active low interrupt output (open
drain)
10
VSS
Supply ground
13, 14, 15,
16
I/O4–7
Quasi-bidirectional I/O pins
17
WC
Active low write control pin
18
SCL
I2C serial clock
19
SDA
I2C serial data
20
VDD
Supply voltage
BLOCK DIAGRAM
POWER-ON
RESET
INPUT
FILTER
I2C/SMBus
CONTROL
INPUT/
OUTPUT
PORTS
WRITE pulse
READ pulse
A0
A1
A2
SCL
SDA
VDD
VSS
8-BIT
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
SW01077
PCA9501
WC
EEPROM
256 x 8
A3
A4
A5
300 k
INT
VCC
LP
FILTER
Figure 2. Block diagram
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