Rainbow Electronics W90P710CDG - Manual (Page 526)

W90P710CD/W90P710CDG
Publication Release Date: September 19, 2006
- 527 - Revision B2
7.3.8 Smart Card Interface AC Characteristics
T
clk_dat
T
clkh
T
clkl
F
SC
T
clk_rst
SC_RST
SC_CLK
SC_DAT
T
R
T
F
SYMBOL DESCRIPTION CONDITION MIN TYP MAX UNIT
T
R
and T
F
for RST
Rising and falling time of
RST signal CL = 30pF
(Max)
0.8 us
T
R
and T
F
for CLK
Rising and falling time of
CLK signal CL = 30pF
(Max)
4
8% of
clock
period
T
R
and T
F
for DAT
(Transmit)
Rising and falling time of
DAT signal in transmission
mode
CL = 30pF
(Max)
0.8 us
T
R
and T
F
for DAT
(Receive)
Rising and falling time of
DAT siganl in receive mode
1.2 us
F
SC
Smart card clock frequency 1 2.5 20 MHz
T
clkh
Smart card clock high time 40% 50% 60% clock
T
clkl
Smart card clock low time 40% 50% 60% clock
T
clk_dat
DAT output delay from
SC_CLK falling edge
5 - 20 ns
T
clk_rst
RST output delay from
SC_CLK falling edge
5 - 10 ns