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DS1673 Datasheet, PDF (14/20 Pages) Dallas Semiconductor – Portable System Controller
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AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Data to Clock Setup
tDC
CLK to Data Hold
tCDH
CLK to Data Delay
tCDD
CLK to Low Time
tCL
CLK to High Time
tCH
CLK Frequency
tCLK
CLK Rise and Fall
tR, tF
CS to CLK Setup
tCC
CLK to CS Hold
tCCH
CS Inactive Time
tCWH
CS to I/O High-Z
VCC Slew Rate (4.5V to 2.3V)
VCC Slew Rate (2.3V to 4.5V)
VCC Detect to RST (VCC Falling)
Reset Active Time
Pushbutton Debounce
VCC Detect to RST (VCC Rising)
ST Pulse Width
tCDZ
tF
tR
tRPD
tRST
PBDB
tRPU
tST
Chip Enable Propagation Delay to
tCED
External SRAM
Nominal Voltage to VCC Switchover
tFB
Fall Time
DS1673
(0°C to 70°C; VCC=5.0V ±=10%)
MIN TYP MAX UNITS NOTES
50
ns
8
70
ns
8
200
ns 8, 9, 10
250
ns
8
250
ns
8
2.0
MHz
8
500
ns
1
µs
8
60
ns
8
1
µs
8
70
ns
8
1
ms
0
ns
100
ns
250
ms
15
250
ms
15
250
ms 15, 16
20
ns
8
15
ns
200
µs
14 of 20
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