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BU9832GUL-W (8Kbit)
Datasheet
SO load capacity condition
Load capacity of SO output pin affects upon delay characteristic of SO output. (Data output delay time, time from HOLD
to High-Z) In order to make output delay characteristic into higher speed, make SO load capacity small. In concrete, “Do
not connect many devices to SO bus”, “Make the wire between the controller and EEPROM short”, and so forth.
tPD-CL characteristics
80
Vcc=2.5V Ta=25 ℃
Spec
70
VIH/VIL=0.8Vcc/0.2Vcc
EEPROM
60
50
40
30
20
Spec
SO
CL
0
20
40
60
80
100
120
CL[pF]
Figure 50. SO load dependency of data output delay time
○ Other cautions
Make the wire length from the microcontroller to EEPROM input signal same length, in order to prevent setup / hold
violation to EEPROM, owing to difference of wire length of each input.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
21/26
TSZ02201-0R2R0G100410-1-2
30.AUG.2012 Rev.001
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