BU9891GUL-W Datasheet, PDF (3/18 Pages) Rohm – WL-CSP EEPROM family Microwire Bus

BU9891GUL-W
●Action timing characteristics
(Ta=-40~+85℃, VCC=2.5~5.5V)
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
(Ta=-40~+85℃, VCC=1.7~2.5V)
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
●Sync data input / output timing
Technical Note
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
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
2.5V≦VCC≦5.5V
Min.
Typ.
Max.
-
-
2
230
-
-
230
-
-
200
-
-
200
-
-
100
-
-
0
-
-
100
-
-
-
-
200
-
-
200
-
-
150
-
-
150
-
-
5
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
1.7V≦VCC≦2.5V
Min.
Typ.
Max.
Unit
-
-
500
kHz
0.8
-
-
us
0.8
-
-
us
1
-
-
us
200
-
-
ns
100
-
-
ns
0
-
-
ns
100
-
-
ns
-
-
0.7
us
-
-
0.7
us
-
-
0.7
us
-
-
200
ns
-
-
5
ms
CS
tCSS
tSK H
tS KL
SK
t DIS
tDI H
DI
t PD0
tPD1
DO(READ)
DO(WRITE)
STATUS VALID
tCS H
tDF
Fig.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.
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3/17
2010.07 - Rev.A