DS1677 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1677 Datasheet PDF : 18 Pages
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DS1677
CAPACITANCE
PARAMETER
Input Capacitance
I/O Capacitance
Crystal Capacitance
SYMBOL
CI
CI/O
CX
MIN
(TA = +25°C)
TYP MAX UNITS NOTES
10
pF
15
pF
6
pF
AC ELECTRICAL CHARACTERISTICS
PARAMETER
Data to Clock Setup
CLK to Data Hold
CLK to Data Delay
CLK to Low Time
CLK to High Time
CLK Frequency
CLK Rise and Fall
CS to CLK Setup
CLK to CS Hold
CS Inactive Time
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
Chip Enable Propagation Delay to
External SRAM
Nominal Voltage to VCC Switchover
Fall Time
SYMBOL
tDC
tCDH
tCDD
tCL
tCH
tCLK
tR, tF
tCC
tCCH
tCWH
tCDZ
tF
tR
tRPD
tRST
PBDB
tRPU
tST
tCED
tFB
PFI Low to PFO Low
tPFD
PFI High to PFO High
tPFU
MIN
50
70
250
250
1
60
1
1
0
20
200
(0°C to 70°C; VCC=5.0V±10%)
TYP MAX UNITS NOTES
ns
6
ns
6
200
ns
6,7,8
ns
6
ns
6
2.0 MHz
6
500
ns
ms
6
ns
6
ms
6
70
ns
6
ms
ns
100
ns
250
ms
13
250
ms
13
250
ms 13, 14
ns
8
15
ns
ms
2
ms
2
ms
14 of 18
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