br93c66-10tu-1.8 ROHM Co. Ltd., br93c66-10tu-1.8 Datasheet - Page 5

• Manufacturer Part Number: br93c66-10tu-1.8
• Description: Advantage Series Serial Eeproms Microwire Bus
• Manufacturer: ROHM Co. Ltd.

●Operating Instructions
© 2010 ROHM Co., Ltd. All rights reserved.
BR93C□□-10□U-1.8 family
www.rohm.com
Table 6: Instruction Set (BR93C46)
Table 7: Instruction Set (BR93C56 and BR93C66)
The BR93□□ has a seven instruction set, shown in Tables
6 and 7. The timing charts depicted in Figures 3 to 10.
Input Data are clocked in from Serial Data Input (DI) at the
rising edge of the Serial Clock (SK), while output data from
the Serial Data Output (DO) toggles at the rising edge of the
Serial Clock (SK) during READ mode.
READ
EWEN
ERASE
WRITE
ERAL
WRAL
EWDS
*1: * = Inconsequential bit
*1:＊= Inconsequential bit
*2: Address bit A7 is not decoded by the BR93C56.
READ
EWEN
ERASE
WRITE
ERAL
WRAL
EWDS
Instruction
Instruction
Start Bit
Start Bit
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Op Code
Op Code
10
00
01
00
00
00
11
10
00
01
00
00
00
11
5/10
A7 A6 A5 A4 A3 A2 A1 A0
A7 A6 A5 A4 A3 A2 A1 A0
A7 A6 A5 A4 A3 A2 A1 A0 D15～D0
A5
A5
A5
1
1
0
0
1
1
0
0
The EEPROM recognizes the first 1 data received, after Chip
Select (CS) goes HIGH, as the START bit. The input of many
0’s before 1 will not make a difference – 1 will still be
recognized as the START bit.
1
0
1
0
A4
A4
A4
1
0
1
0
*
*
*
*
Address
Address*1
A3
A3
A3
*
*
*
*
*
*
*
*
A2
A2
A2
*
*
*
*
*1, *2
*
*
*
*
*
*
*
*
A1
A1
A1
*
*
*
*
*
*
*
*
A0
A0
A0
*
*
*
*
*
*
*
*
D15～D0
D15～D0
D15～D0
Technical Note
2010.07 - Rev.A
Data
Data