PCF8563 Просмотр технического описания (PDF) - Philips Electronics
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PCF8563 Datasheet PDF : 30 Pages
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Philips Semiconductors
PCF8563
Real-time clock/calendar
11. Dynamic characteristics
Table 30: Dynamic characteristics
VDD = 1.8 to 5.5 V; VSS = 0 V; Tamb = −40 to +85 °C; fOSC = 32.768 kHz; quartz Rs = 40 kΩ; CL = 8 pF; unless otherwise
specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Oscillator
CL(integrated) integrated load capacitance
15
25
35
pF
∆fOSC/fOSC oscillator stability
∆VDD = 200 mV; Tamb = 25 °C
−
2 × 10−7 −
Quartz crystal parameters (fOSC = 32.768 kHz)
Rs
series resistance
−
−
40
kΩ
CL
parallel load capacitance
−
10
−
pF
CT
trimmer capacitance
5
−
25
pF
CLKOUT output
δCLKOUT
CLKOUT duty factor
I2C-bus timing characteristics [2]
[1] −
50
−
%
fSCL
tHD;STA
tSU;STA
SCL clock frequency
START condition hold time
set-up time for a repeated
START condition
[3] −
−
0.6
−
0.6
−
400
kHz
−
µs
−
µs
tLOW
tHIGH
tr
tf
Cb
tSU;DAT
tHD;DAT
tSU;STO
tSW
SCL LOW time
SCL HIGH time
SCL and SDA rise time
SCL and SDA fall time
capacitive bus line load
data set-up time
data hold time
set-up time for STOP condition
tolerable spike width on bus
1.3
−
0.6
−
−
−
−
−
−
−
100
−
0
−
4.0
−
−
−
−
µs
−
µs
0.3
µs
0.3
µs
400
pF
−
ns
−
ns
−
µs
50
ns
[1] Unspecified for fCLKOUT = 32.768 kHz.
[2] All timing values are valid within the operating supply voltage range at Tamb and referenced to VIL and VIH with an input voltage swing of
VSS to VDD.
[3] I2C-bus access time between two STARTs or between a START and a STOP condition to this device must be less than one second.
9397 750 04855
Product specification
16 April 1999
© Philips Electronics N.V. 1999. All rights reserved.
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