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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� DS1302SN+T&R
寤犲晢锛� Maxim Integrated Products
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鎻忚堪锛� IC TIMEKEEPER T-CHARGE IND 8SOIC
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Obsolescence Mitigation Program
妯欐簴鍖呰锛� 2,000
椤炲瀷锛� 鏅傞悩/鏃ユ
鐗归粸锛� 闁忓勾锛孨VSRAM锛屾稉娴佸厖闆诲櫒
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鏁�(sh霉)鎿�(j霉)鏍煎紡锛� YY-MM-DD-dd
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宸ヤ綔婧害锛� -40°C ~ 85°C
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DS1302 Trickle-Charge Timekeeping Chip
11 of 13
CAPACITANCE
(TA = +25掳C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Capacitance
CI
10
pF
I/O Capacitance
CI/O
15
pF
AC ELECTRICAL CHARACTERISTICS
(TA = 0掳C to +70掳C or TA = -40掳C to +85掳C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VCC = 2.0V
200
Data to CLK Setup
tDC
VCC = 5V
(Note 6)
50
ns
VCC = 2.0V
280
CLK to Data Hold
tCDH
VCC = 5V
(Note 6)
70
ns
VCC = 2.0V
800
CLK to Data Delay
tCDD
VCC = 5V
(Notes 6, 7, 8)
200
ns
VCC = 2.0V
1000
CLK Low Time
tCL
VCC = 5V
(Note 6)
250
ns
VCC = 2.0V
1000
CLK High Time
tCH
VCC = 5V
(Note 6)
250
ns
VCC = 2.0V
0.5
CLK Frequency
tCLK
VCC = 5V
(Note 6)
DC
2.0
MHz
VCC = 2.0V
2000
CLK Rise and Fall
tR, tF
VCC = 5V
500
ns
VCC = 2.0V
4
CE to CLK Setup
tCC
VCC = 5V
(Note 6)
1
渭s
VCC = 2.0V
240
CLK to CE Hold
tCCH
VCC = 5V
(Note 6)
60
ns
VCC = 2.0V
4
CE Inactive Time
tCWH
VCC = 5V
(Note 6)
1
渭s
VCC = 2.0V
280
CE to I/O High Impedance
tCDZ
VCC = 5V
(Note 6)
70
ns
VCC = 2.0V
280
SCLK to I/O High Impedance
tCCZ
VCC = 5V
(Note 6)
70
ns
Note 1:
Limits at -40掳C are guaranteed by design and are not production tested.
Note 2:
All voltages are referenced to ground.
Note 3:
ICC1T and ICC2T are specified with I/O open, CE and SCLK set to a logic 0.
Note 4:
ICC1A and ICC2A are specified with the I/O pin open, CE high, SCLK = 2MHz at VCC = 5V; SCLK = 500kHz, VCC = 2.0V.
Note 5:
CE, SCLK, and I/O all have 40k
惟 pulldown resistors to ground.
Note 6:
Measured at VIH = 2.0V or VIL = 0.8V and 10ns maximum rise and fall time.
Note 7:
Measured at VOH = 2.4V or VOL = 0.4V.
Note 8:
Load capacitance = 50pF.
Note 9:
ICC1S and ICC2S are specified with CE, I/O, and SCLK open.
Note 10:
VCC = VCC2, when VCC2 > VCC1 + 0.2V; VCC = VCC1, when VCC1 > VCC2.
Note 11:
VCC2 = 0V.
Note 12:
VCC1 = 0V.
Note 13:
Typical values are at +25掳C.
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