参数资料
| 型号： | BR93L46FJ-WE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 28/41页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 1KBIT 2MHZ 8SOP |
| 标准包装： | 1 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 1K (64 x 16) |
| 速度： | 2MHz |
| 接口： | Microwire 3 线串行 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOP-J |
| 包装： | 标准包装 |
| 产品目录页面： | 1380 (CN2011-ZH PDF) |
| 其它名称： | BR93L46FJ-WE2DKR |
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BR93L -W Series, 93A □□ -WM Series, BR93H □□ -WC Series
Technical Note
● Description of operations
Communications of the Microwire Bus are carried out by SK (serial clock), DI (serial data input),DO (serial data output) ,and
CS (chip select) for device selection.
When to connect one EEPROM to a microcontroller, connect it as shown in Fig.29-(a) or Fig.29-(b). When to use the input
and output common I/O port of the microcontroller, connect DI and DO via a resistor as shown in Fig.29-(b) (Refer to pages
31/35.), and connection by 3 lines is available.
In the case of plural connections, refer to Fig. 29-(c).
Micro-
Micro-
controller
CS
SK
BR93HXX
CS
SK
Micro-
controller
CS
SK
BR93HXX
CS
SK
controller
CS3
CS1
CS0
SK
DO
DI
DO
DI
DI
DO
DO
DI
DO
Device 1
Device 2
Device 3
Fig.29-(a) Connection by 4 lines Fig.29-(b) Connection by 3 lines
Fig.29-(c) Connection example of plural devices
Fig.29 Connection method with microcontroller
Communications of the Microwire Bus are started by the first “1” input after the rise of CS. This input is called a start bit. After
input of the start bit, input ope code, address and data. Address and data are input all in MSB first manners.
“0” input after the rise of CS to the start bit input is all ignored. Therefore, when there is limitation in the bit width of PIO of the
microcontroller, input “0” before the start bit input, to control the bit width.
● Command mode
Command
Start
bit
Ope
code
BR93H56/66-WC
Address
BR93H76/86-WC
Data
Read (READ)
Write enable (WEN)
Write (WRITE)
Write all (WRAL)
Write disable (WDS)
*1
*2
*2,3
1
1
1
1
1
10
00
01
00
00
A7,A6,A5,A4,A3,A2,A1,A0
1 1 ******
A7,A6,A5,A4,A3,A2,A1,A0
0 1 * * * * * B0
0 0 ******
A9,A8,A7,A6,A5,A4,A3,A2,A1,A0
1 1 ********
A9,A8,A7,A6,A5,A4,A3,A2,A1,A0
0 1 * * * * * B2,B1,B0
0 0 ********
D15~D0(READ DATA)
D15~D0(WRITE DATA)
D15~D0(WRITE DATA)
? Input the address and the data in MSB first manners.
? As for *, input either VIH or VIL.
*Start bit
A7 and B0 of BR93H56-WC becomes Don't Care.
A9 and B2 of BR93H76-WC becomes Don't Care.
Acceptance of all the commands of this IC starts at recognition of the start bit.
The start bit means the first “1” input after the rise of CS.
*1 As for read, by continuous SK clock input after setting the read command, data output of the set address starts, and
address data in significant order are sequentially output continuously. (Auto increment function)
*2 When the read and the write all commands are executed, data written in the selected memory cell is automatically deleted, and input data is written.
*3 For the write all command, data written in memory cell of the areas designated by B2, B1, and B0, are automatically
deleted, and input data is written in bulk.
● Write all area
B2
0
0
B1 B0
0 0
0 1
Write area
000h ～ 07Fh
080h ～ 0FFh
0
1 0
100h ～ 17Fh
Designation of B2, B1, and B0
0
1
1
1
1
1 1
0 0
0 1
1 0
1 1
180h ～ 1FFh
200h ～ 27Fh
280h ～ 2FFh
300h ～ 37Fh
380h ～ 3FFh
H56
H66
H76
H86
＊
＊
＊
B2
＊
＊
B1
B1
＊
B0
B0
B0
? The write all command is written in bulk in 2Kbit unit.
The write area can be selected up to 3bit. Confirm the settings and write areas of the above B2, B1, and B0.
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
28/40
2011.09 - Rev.G
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BR93L46F-LE2 | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Serial EEPROMs High Reliability Series |
| BR93L46FV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:EEPROM |
| BR93L46FVT-W | 制造商:ROHM 制造商全称:Rohm 功能描述:Microwire BUS 1Kbit(64 x 16bit) EEPROM |
| BR93L46FVT-WE2 | 功能描述:电可擦除可编程只读存储器 MICROWIRE BUS 1Kbit 1.8-5.5V Supply 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 |
| BR93L46FV-W | 制造商:ROHM Semiconductor 功能描述:EEPROM,1kb,64Wx16b,Microwire Bus,SSOP8 |
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