RX5C348A Datasheet, PDF (6/45 Pages) RICOH electronics devices division – 4-WIRE SERIAL INTERFACE

Rx5C348A/B
AC ELECTRICAL CHARACTERISTICS
Unless otherwise specified: VSS=0V,Topt=-40 to +85°C
Input and Output Conditions: VIH=0.8×VDD,VIL=0.2×VDD,VOH=0.8×VDD,VOL=0.2×VDD,CL=50pF
Symbol Item
Condi- VDD≥2.0V
VDD≥4.5V
Unit
tions
Min. Typ. Max. Min. Typ. Max.
t_CES
CE Set-up Time
400
200
ns
t_CEH
CE Hold Time
400
200
ns
t_CR
CE Recovery Time
62
62
µs
f_SCLK
SCLK Clock
Frequency
1.0
2.0
M
Hz
t_CKH
SCLK Clock High
400
200
ns
Time
t_CKL
SCLK Clock Low
400
200
ns
Time
t_CKS
SCLK Set-up Time
200
100
ns
t_RD
Data Output Delay
Time
300
150 ns
t_RZ
Data Output Floating
Time
300
150 ns
t_CEZ
Data Output Delay
Time After Falling of
300
150 ns
CE
t_DS
Input Data
Set-up Time
200
100
ns
t_DH
Input Data
Hold Time
200
100
ns
CE
SCLK
t_CKH
t_CKL
t_CKS t_CES
t_CEH
t_CR
t_{DS tDH}
SI
t_CEZ
SO
t_RD
t_RD
t_RZ
*) For reading/writing timing, see “P.28. Adjustment of Oscillation frequency”.
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Rev.2.01
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