BU8272GUW Datasheet, PDF (6/18 Pages) Rohm – GPIO Expander IC

BU8272GUW
Technical Note
● Pin-out Functional Descriptions
1. Pin table
PIN
No.
Land
number
PIN name
I/O
Power
source
system
Function
1
A1
VDDI2C
-
-
2 (NC)
-
-
-
3
C3
GND
-
-
4
C1
ADR
IN
VDDI2C
5
C2
SDA
INOUT
VDDI2C Serial data inout for 2-Wire
6
D1
SCL
IN
VDDI2C Clock for 2-Wire
7
D2
XRST
IN
VDDI2C Reset（Low Active）
8
E1
INT
OUT
VDDI2C Interrupt signal
*1
9
E2
GND
-
-
10 F1
11 F2
VDD
GPIO0
-
INOUT
-
VDDIO1
General purpose inout. Pull-up to VDD ^*2
12 D3
13 F3
14 E3
15 F4
16 E4
17 F5
18 E5
GND
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
-
INOUT
INOUT
INOUT
INOUT
INOUT
INOUT
-
VDDIO1
VDDIO1
VDDIO1
VDDIO1
VDDIO1
VDDIO1
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
19
F6
VDDIO1
-
20 E6
GPIO7 INOUT
-
VDDIO1
General purpose inout. Pull-up to VDD ^*2
21 D4
22 D6
23 D5
24 C6
25 C5
26 B6
GND
GPIO8
GPIO9
GPIO10
GPIO11
GPIO12
-
INOUT
INOUT
INOUT
INOUT
INOUT
-
VDDIO2
VDDIO2
VDDIO2
VDDIO2
VDDIO2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
General purpose inout. Pull-up to VDD ^*2
27 B5
VDD
28 A6
29 A5
VDDIO2
GPIO13
-
INOUT
-
VDDIO2
General purpose inout. Pull-up to VDD ^*2
30 C4
GND
-
-
31 A4
GPIO14 INOUT
VDDIO2 General purpose inout. Pull-up to VDD ^*2
32 B4
GPIO15 INOUT
VDDIO2 General purpose inout. Pull-up to VDD ^*2
33 A3
GPIO16 INOUT
VDDIO2 General purpose inout. Pull-up to VDD ^*2
34 B3
GPIO17 INOUT
VDDIO2 General purpose inout. Pull-up to VDD ^*2
35 A2
GPIO18 INOUT
VDDIO2 General purpose inout. Pull-up to VDD ^*2
36 B2
GPIO19 INOUT
VDDIO2 General purpose inout. Pull-up to VDD ^*2
*1 _{The Low Active or High Active of interrupt output level and specific bit mask control are decided by internal register value.}
*2 _{When IOSEL register is set to “1”, please pull-up IO output to the same value as VDDIO1 or VDDIO2 voltages respectively.}
Cell
Type
XRST
B
-
A
Hi-z
B
-
B
L
C
-^*3
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
A
Hi-z
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6/17
2009.09 - Rev.A