AT24C16D-CHM 데이터 시트보기 (PDF) - Atmel Corporation
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AT24C16D-CHM Datasheet PDF : 28 Pages
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1. Pin Descriptions and Pinouts
Table 1-1. Pin Descriptions
Pin
Pin
Number Symbol Pin Name and Functional Description
Asserted Pin
State Type
No Connect: The NC pins are not bonded to a die pad. These pins can be
1, 2, 3
NC
—
—
connected to GND or left floating.
Ground: The ground reference for the power supply. GND should be
4
GND
connected to the system ground.
—
Power
Serial Data: The SDA pin is an open-drain bidirectional input/output pin
used to serially transfer data to and from the device.
Input/
5
SDA The SDA pin must be pulled-high using an external pull-up resistor (not to
—
Output
exceed 10K 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.
Serial Clock: The SCL pin is used to provide a clock to the device and to
control the flow of data to and from the device. Command and input data
present on the SDA pin is always latched in on the rising edge of SCL, while
6
SCL output data on the SDA pin is clocked out on the falling edge of SCL.
—
Input
The SCL pin must either be forced high when the serial bus is idle or
pulled-high using an external pull-up resistor.
Write Protect: Connecting the WP pin to GND will ensure normal Write
operations. When the WP pin is connected to VCC, all write operations to the
7
WP memory are inhibited.
High
Input
Refer to Note 1 for the behavior of the pin when not connected.
Device Power Supply: The VCC pin is used to supply the source voltage to
8
VCC the device. Operations at invalid VCC voltages may produce spurious results
—
Power
and should not be attempted.
Note:
1. If the WP pin is not driven, it is internally pulled down to GND. In order to operate in a wide variety of
application environments, the pull-down mechanism is intentionally designed to be somewhat strong. Once
these pins are biased above the CMOS input buffer’s trip point (~0.5 x VCC), the pull-down mechanism
disengages. Atmel recommends connecting these pins to a known state whenever possible.
8-lead SOIC
8-lead TSSOP
8-pad UDFN
8-lead PDIP
NC
NC
NC
GND
1
8
2
7
3
6
4
5
Top View
VCC
WP
SCL
SDA
NC
NC
NC
GND
1
8
2
7
3
6
4
5
Top View
VCC
WP
SCL
SDA
NC 1
NC 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
Top View
NC 1
NC 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
Top View
(1)
5-lead SOT23
8-ball VFBGA
(1)
4-ball WLCSP
SCL 1 5 WP
GND 2
SDA
34
VCC
Top View
NC 1
NC 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
Top View
VCC GND
SCL SDA
Top View
Note: Package drawings are not to scale.
Note: 1. Refer to “Device Addressing” for details about addressing the SOT23 and WLCSP version of the device.
2
AT24C16D [DATASHEET]
Atmel-8906C-SEEPROM-AT24C16D-Datasheet_052015
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