参数资料
| 型号： | BU8272GUW-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC EXPANDER GPIO LSI 35-VBGA |
| 标准包装： | 2,500 |
| 接口： | 串行 |
| 输入/输出数： | 20 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 1.65 V ~ 1.95 V，1.65 V ~ 3.45 V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-VFBGA |
| 供应商设备封装： | VBGA035W040 |
| 包装： | 带卷 (TR) |
1/17
www.rohm.com
2009.09 - Rev.A
2009 ROHM Co., Ltd. All rights reserved.
GPIO ICs Series
GPIO Expander IC
BU8272GUW
●Description
GPIO expander is useful especially for the application that is in short of IO ports.
It can
1. Control GPIO output states by I
2C write protocol.
2. Know GPIO input states by I
2C read protocol.
Furthermore,it has the interrupt function that can release CPU from polling the registers in the GPIO expander.
GPIO expander are also equipped with Built-in power on reset, 3V tolerant input,and NMOS open-drain output.
●Features
1) 400Kbps, 2-Wire serial interface
2) Interrupt output
3) 20-bit General purpose input/output interface
8-bit and 12-bit IO groups are designed for different power supply
voltages from the device core voltage supply
● Absolute Maximum Ratings
(Ta=25℃)
*1
The input voltage range doesn't exceed absolute maximum ratings even including +0.5 V.
*2
Package dissipation will be reduced each 3.1mW/
oC when the ambient temperature increases beyond 25 oC.
This IC is not designed to be X-ray proof.
● Recommended Operating Conditions
(Ta=-25
oC ~+85 oC)
Item
Symbol
Value
Unit
comment
Supply Voltage
VDD
-0.3 ~ +2.5
V
-
VDDI2C
-0.3 ~ +3.5
V
-
VDDIO
-0.3 ~ +3.5
V
-
Input voltage
VI
-0.3 ~ VDD +0.5
*1
V
CMOS Core
-0.3 ~ VDDI2C +0.5
*1
V
CMOS I/O for 2-Wire
-0.3 ~ VDDIO +0.5
*1
V
CMOS I/O
Storage temperature range
Tstg
-55 ~ +125
oC
-
Package power
PD
310
*2
mW
-
Item
Symbol
Limit
Unit
Condition
Min
Typ
Max
Supply voltage
(VDD）
V
VDD
1.65
1.80
1.95
V
Core
Supply voltage（VDDI2C）
V
VDDI2C
1.65
-
3.45
V
2-Wire,INT,ADR, XRST
Supply voltage（VDDIO1）
V
VDDIO1
1.65
-
3.45
V
GPIO[7:0]
Supply voltage（VDDIO2）
V
VDDIO2
1.65
-
3.45
V
GPIO[19:8]
2-Wire operating Frequency
F
I2C
-
400
KHz
Slave
No.09098EAT01
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