DS1673 Datasheet, PDF (15/18 Pages) Dallas Semiconductor – Portable System Controller

DS1673
AC ELECTRICAL CHARACTERISTICS (V_CC = 3.0V ±10%, T_A = 0°C to +70°C.)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
Data to Clock Setup
t_DC
150
ns
8
CLK to Data Hold
t_CDH
210
ns
8
CLK to Data Delay
CLK to Low Time
t_CDD
t_CL
750
600
ns 8, 9, 10
ns
8
CLK to High Time
CLK Frequency
t_CH
750
t_CLK
ns
8
0.667 MHz
8
CLK Rise and Fall
CS to CLK Setup
t_R, t_F
t_CC
3
1500
ns
ms
8
CLK to CS Hold
CS Inactive Time
t_CCH
180
t_CWH
3
ns
8
ms
8
CS to I/O High-Z
t_CDZ
210
ns
8
V_CC Slew Rate (2.7V to 2.3V)
t_F
300
ms
V_CC Slew Rate (2.3V to 2.7V)
t_R
0
ns
V_CC Detect to RST (V_CC Falling)
t_RPD
200
ns
Reset Active Time
t_RST
250
ms
15
Pushbutton Debounce
PB_DB
250
ms
15
V_CC Detect to RST (V_CC Rising)
t_RPU
250
ms 15, 16
ST Pulse Width
t_ST
40
ns
Chip Enable Propagation Delay to
External SRAM
t_CED
8
25
ns
Nominal Voltage to V_CC Switchover
Fall Time
t_FB
300
ms
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