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BU1852GUW 数据表(PDF) 8 Page - Rohm

部件名 BU1852GUW
功能描述  Keyencoder IC
Download  25 Pages
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制造商  ROHM [Rohm]
网页  http://www.rohm.com
标志 ROHM - Rohm

BU1852GUW 数据表(HTML) 8 Page - Rohm

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Technical Note
8/24
BU1852GUW
www.rohm.com
2011.01 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
Pin Functional Descriptions
PIN name
I/O
Function
Init
Cell Type
VDD
-
Power supply (Core, I/O except for COL[11:0], ADR)
-
-
VDDIO
-
Power supply (I/O for COL[11:0], ADR)
-
-
VSS
-
GND
-
-
XRST
I
Reset(Low Active)
I
A
XI
I
External clock input (32kHz)
I
I
TW
I
Select protocol
H:
original 3 wire
L:
I
2C
I
B
ADR
I
(TW=L) Select Device Address for I
2C
(TW=H)
H : Key scan rate 1/2
L : Key scan rate original
I
B
XINT
O
Key/GPIO Interrupt
H(TW=H)
Hi-z(TW=L)
E
SCL
I
Clock for serial interface
I
D
SDA
I/O
Serial data inout for serial interface
I
F
ROW0
I/O
ROW0
/ GPIO0
I
[100kΩ Pull-up]
G
ROW1
I/O
ROW1
/ GPIO1
ROW2
I/O
ROW2
/ GPIO2
ROW3
I/O
ROW3
/ GPIO3
ROW4
I/O
ROW4
/ GPIO4
ROW5
I/O
ROW5
/ GPIO5
ROW6
I/O
ROW6
/ GPIO6
ROW7
I/O
ROW7
/ GPIO7
COL0
I/O
COL0
/ GPIO8
L(TW=H)
I
[150kΩ Pull-down]
(TW=L)
H
COL1
I/O
COL1
/ GPIO9
COL2
I/O
COL2
/ GPIO10
COL3
I/O
COL3
/ GPIO11
COL4
I/O
COL4
/ GPIO12
COL5
I/O
COL5
/ GPIO13
COL6
I/O
COL6
/ GPIO14
COL7
I/O
COL7
/ GPIO15
COL8
I/O
COL8
/ GPIO16
COL9
I/O
COL9
/ GPIO17
COL10
I/O
COL10
/ GPIO18
COL11
I/O
COL11
/ GPIO19
PORENB
I
Power on reset enable (Low Active)
I
B
TESTM0
I
Test Pins
1
I
C
TESTM1
I
1 Note: All these pins must be tied down to GND in normal operation.


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