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AT21CS01 数据表(PDF) 11 Page - Microchip Technology

部件名 AT21CS01
功能描述  Single-Wire, I/O Powered 1-Kbit (128 x 8) Serial EEPROM with a Unique, Factory-Programmed 64-Bit Serial Number
PDF  47 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

AT21CS01 数据表(HTML) 11 Page - Microchip Technology

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2.
Pin Descriptions
The descriptions of the pins are listed in Table 2-1.
Table 2-1. Pin Function Table
Name
2-pad XSFN
3-lead SOT23
8-lead SOIC
4-ball WLCSP Function
NC
—
—
1
—
No Connect
NC
—
—
2
—
No Connect
NC
—
2
3
—
No Connect
GND
2
3
4
B1
Ground
SI/O
1
1
5
A1
Serial Input and
Output
NC
—
—
6
No Connect
NC
—
—
7
—
No Connect
NC
—
—
8
—
No Connect
2.1
No Connect
The NC pins are not internally connected. These pins can be connected to GND or left floating.
2.2
Serial Input and Output
The SI/O pin is an open-drain, bidirectional input/output pin used to serially transfer data to and from the
device.
The SI/O pin must be pulled high using an external pull
‑up resistor (not to exceed 4 kΩ in value) and may
be wire-ORed with any number of other open
‑drain or open‑collector pins from other devices on the same
bus.
The device also uses the SI/O pin as its voltage source by drawing and storing power during the periods
that the pin is pulled high to a voltage level between 1.7V and 3.6V (AT21CS01) and between 2.7V and
4.5V (AT21CS11).
AT21CS01/AT21CS11
© 2017 Microchip Technology Inc.
Datasheet
DS20005857A-page 11



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