- 您现在的位置：买卖IC网 > Datasheet目录316 > BU9891GUL-WE2 (Rohm Semiconductor)IC EEPROM 4KBIT VCSP T/R Datasheet资料下载
参数资料
| 型号： | BU9891GUL-WE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 13/25页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 4KBIT VCSP T/R |
| 标准包装： | 3,000 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 4K (256 x 16) |
| 速度： | 2MHz |
| 接口： | Microwire 3 线串行 |
| 电源电压： | 1.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 6-UFBGA，CSPBGA |
| 供应商设备封装： | VCSP50L1 |
| 包装： | 带卷 (TR) |
BU9891GUL-W (4Kbit)
● Timing chart
1) Read cycle (READ)
Datasheet
CS
*1
～ ～
～ ～
～ ～
～ ～
SK
1
2
4
～ ～
27
28
～ ～
～ ～
DI
1
1
0
A7
～ ～
A1
A0
～ ～
*2
～ ～
DO
～ ～
0
D15
D14
～ ～
D1
D0
D15 D14
～ ～
High-Z
*1 Start bit
When data “1” is input for the first time after the rise of CS, this is recognized as a start bit. And when “1” is input after plural “0” are input, it is recognized
as a start bit, and the following operation is started. This is common to all the commands to described hereafter.
Figure 31. Read cycle
○ When the read command is recognized, input address data (16bit) is output to serial. And at that moment, at taking A0,
in sync with the rise of SK, “0” (dummy bit) is output. And, the following data is output in sync with the rise of SK.
This IC has an address auto increment function valid only at read command. This is the function where after the above
read execution, by continuously inputting SK clock, the above address data is read sequentially. And, during the auto
increment, keep CS at “H”.
2) Write cycle (WRITE)
CS
～ ～
～ ～
～ ～
～ ～
tCS
～ ～
～ ～
STATUS
SK
1
2
4
27
～ ～
～ ～
～ ～
DI
1
0
1
A7
～ ～
A1
A0
D15
D14
～ ～
D1
D0
～ ～
tSV
DO
～ ～
BUSY READY
High-Z
tE/W
Figure 32. Write cycle
In this command, input 16bit data (D15 to D0) are written to designated addresses (Am to A0). The actual write starts
by the fall of CS of D0 taken SK clock.
When STATUS is not detected, (CS=”L” fixed) Max. 5ms in conformity with tE/W, and when STATUS is detected
(CS=”H”), all commands are not accepted for areas where “L” (BUSY) is output from D0, therefore, do not input any
command.
3) Write enable (WEN) / disable (WDS) cycle
～ ～
CS
SK
1
2
3
4
5
6
7
8
～ ～
11
ENABLE=1 1
DISABLE=0 0
～ ～
DI
1
0
0
～ ～
DO
High-Z
Figure 33. Write enable (WEN) / disable (WDS) cycle
At power on, this IC is in write disable status by the internal RESET circuit. Before executing the write command, it is
necessary to execute the write enable command. And, once this command is executed, it is valid unitl the write disable
command is executed or the power is turned off. However, the read command is valid irrespective of write enable /
diable command. Input to SK after 6 clocks of this command is available by either “H” or “L”, but be sure to input it.
○ When the write enable command is executed after power on, write enable status gets in. When the write disable
command is executed then, the IC gets in write disable status as same as at power on, and then the write command is
canceled thereafter in software manner. However, the read command is executable. In write enable status, even when
the write command is input by mistake, write is started. To prevent such a mistake, it is recommended to execute the
write disable command after completion of write.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
13/22
TSZ02201-0R2R0G100440-1-2
3.SEP.2012 Rev.001
相关PDF资料 |
PDF描述 |
|---|---|
| BU9897GUL-WE2 | IC EEPROM SERIAL VCSP50L2 |
| BU99901GUZ-WE2 | IC EEPROM 32KBIT 2WIRE VCSP |
| BUK218-50DY,118 | TOPFET DUAL SWITCH D2PAK |
| BVL121200003N | BATTERY CHG UNIV 12VDC @ 1.2A |
| BVW241250003A | BATTERY CHG UNIV 24VDC @ 1.25A |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BU9897GUL-W | 制造商:ROHM 制造商全称:Rohm 功能描述:Silicon Monolithic Integrated Circuit |
| BU9897GUL-W_11 | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Series Serial EEPROMs WL-CSP EEPROM family I2C BUS |
| BU9897GUL-WE2 | 功能描述:电可擦除可编程只读存储器 Serial 电可擦除可编程只读存储器 I2C BUS 128Kb RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| BU99022NUX-3TR | 功能描述:IC EEPROM I2C BUS 2KB 8VSON 制造商:rohm semiconductor 系列:- 包装:剪切带（CT） 零件状态:有效 格式 - 存储器:EEPROMs - 串行 存储器类型:EEPROM 存储容量:4K （256 x 8 x 2） 速度:400kHz 接口:I2C，2 线串口 电压 - 电源:1.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C（TA） 封装/外壳:8-UFDFN 裸露焊盘 供应商器件封装:VSON008X2030 标准包装:1 |
| BU9910KV | 制造商:ROHM 制造商全称:Rohm 功能描述:Status display LCD driver for PCs with I2C Bus interface |
发布紧急采购，3分钟左右您将得到回复。