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BU9891GUL-W (4Kbit)
● Action timing characteristics
(Ta=-40 ℃ to +85 ℃ , V CC =2.5V to 5.5V)
Datasheet
Parameter
SK frequency
SK “H” time
SK “L” time
CS “L” time
CS setup time
DI setup time
CS hold time
DI hold time
Data “1” output delay time
Data “0” output delay time
Time from CS to output establishment
Time from CS to High-Z
Write cycle time
Symbol
f SK
t SKH
t SKL
t CS
t CSS
t DIS
t CSH
t DIH
t PD1
t PD0
t SV
t DF
t E/W
Min.
-
230
230
200
200
100
0
100
-
-
-
-
-
2.5V ≦ V CC ≦ 5.5V
Typ. Max.
- 2
- -
- -
- -
- -
- -
- -
- -
- 200
- 200
- 150
- 150
- 5
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
(Ta=-40 ℃ to +85 ℃ , V CC =1.7V to 2.5V)
Parameter
SK frequency
SK “H” time
SK “L” time
CS “L” time
CS setup time
DI setup time
CS hold time
DI hold time
Data “1” output delay time
Data “0” output delay time
Time from CS to output establishment
Time from CS to High-Z
Write cycle time
Symbol
f SK
t SKH
t SKL
t CS
t CSS
t DIS
t CSH
t DIH
t PD1
t PD0
t SV
t DF
t E/W
Min.
-
0.8
0.8
1
200
100
0
100
-
-
-
-
-
1.7V ≦ V CC ≦ 2.5V
Typ. Max.
- 500
- -
- -
- -
- -
- -
- -
- -
- 0.7
- 0.7
- 0.7
- 200
- 5
Unit
kHz
us
us
us
ns
ns
ns
ns
us
us
us
ns
ms
● Sync data input / output timing
CS
tCSS
tSKH
tSKL
tCSH
SK
DI
tDIS
t PD0
tDI H
tPD1
DO(READ)
tDF
DO(WRITE)
STATUS VALID
Figure 1. Sync data input / output timing
○ Data is taken by DI sync with the rise of SK.
At read action, data is output from DO in sync with the rise of SK.
○ The status signal at write (READY / BUSY) is output after tCS from the fall of CS after write command input, at the area
DO where CS is “H”, and valid until the next command start bit is input. And, while CS is “L”, DO becomes High-Z.
○ After completion of each mode execution, set CS “L” once for internal circuit reset, and execute the following action
mode.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
3/22
TSZ02201-0R2R0G100440-1-2
3.SEP.2012 Rev.001
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