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DS1677 Datasheet(PDF) 13 Page - Dallas Semiconductor

Part # DS1677
Description  Portable System Controller
PDF  17 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1677 Datasheet(HTML) 13 Page - Dallas Semiconductor

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DS1677
13 of 17
CAPACITANCE
(tA=25
°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Input Capacitance
CI
10
pF
I/O Capacitance
CI/O
15
pF
Crystal Capacitance
CX
6pF
AC ELECTRICAL CHARACTERISTICS
(0
°C to 70°C; V
CC=5.0V
±10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Data to Clock Setup
tDC
50
ns
8
CLK to Data Hold
tCDH
70
ns
8
CLK to Data Delay
tCDD
200
ns
8, 9, 10
CLK to Low Time
tCL
250
ns
8
CLK to High Time
tCH
250
ns
8
CLK Frequency
tCLK
2.0
MHz
8
CLK Rise and Fall
tR, tF
500
ns
CS to CLK Setup
tCC
1
µs
8
CLK to CS Hold
tCCH
60
ns
8
CS Inactive Time
tCWH
1
µs
8
CS to I/O High-Z
tCDZ
70
ns
8
VCC Slew Rate (4.5V to 2.3V)
tF
1ms
VCC Slew Rate (2.3V to 4.5V)
tR
0ns
VCC Detect to RST (VCC Falling)
tRPD
100
ns
Reset Active Time
tRST
250
ms
15
Pushbutton Debounce
PBDB
250
ms
15
VCC Detect to RST (VCC Rising)
tRPU
250
ms
15, 16
ST
Pulse Width
tST
20
ns
Chip Enable Propagation Delay to
External SRAM
tCED
815
ns
Nominal Voltage to VCC Switchover
Fall Time
tFB
200
µs
PFI Low to PFO Low
tPFD
2
µs
PFI High to PFO High
tPFU
2
µs



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