MAX6901 查看數據表（PDF） - Maxim Integrated
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MAX6901 Datasheet PDF : 18 Pages
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3-Wire Serial RTC in a TDFN
AC ELECTRICAL CHARACTERISTICS
(VCC = +2.0V to +5.5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V CC = +3.3V, TA = +25°C.) (Figures 4, 5
and Notes 1, 4)
PARAMETER
OSCILLATOR
X1 to Ground Capacitance (Note 5)
X2 to Ground Capacitance (Note 5)
3-WIRE SERIAL TIMING
Data to CLK Setup
CLK to Data Hold
CLK to Data Delay
CLK Low Time
CLK High Time
CLK Frequency
CLK Rise and Fall Time
CS to CLK Setup
CLK to CS Hold
CS Inactive Time
CS to I/O High Z
SCLK to I/O High Z
SYMBOL
CONDITIONS
tDC
tCDH
tCDD
tCL
tCH
fCLK
tR, tF
tCC
tCCH
tCWH
tCDZ
tCCZ
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
CL = 50pF
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
RL = 1kΩ, CL = 60pF
RL = 1kΩ, CL = 60pF
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
VCC = +2V
VCC = +5V
MIN TYP MAX UNITS
25
pF
25
pF
200
50
280
70
1000
250
1000
250
DC
DC
4
1
240
60
4
1
0
0
0
0
ns
ns
800
ns
200
ns
0.5
2.0
2000
500
ns
MHz
ns
µs
ns
µs
280
ns
70
280
ns
70
Note 1: All parameters are 100% tested at TA = +25°C. Limits over temperature are guaranteed by design and not production tested.
Note 2: ICC is specified with the I/O grounded, CS high, SCLK = 2MHz at VCC = +5V; SCLK = 500kHz at VCC = +2.0V, 32kHz output
enabled, and no load on 32kHz output.
Note 3: Timekeeping current is specified with CS = GND, SCLK = GND, I/O = GND, 32kHz = GND, and 32kHz disabled.
Note 4: All values referred to VIH min and VIL max levels.
Note 5: Guaranteed by design. Not production tested.
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