參數(shù)資料
型號： 935192230015
廠商： NXP SEMICONDUCTORS
元件分類： 時鐘/數(shù)據(jù)恢復及定時提取
英文描述： REAL TIME CLOCK, UUC
封裝： DIE
文件頁數(shù)： 14/31頁
文件大?。?/td> 213K
代理商： 935192230015
1997 Mar 25
21
Philips Semiconductors
Product specication
Low power clock/calendar
PCF8593
13 AC CHARACTERISTICS
VDD = 2.5 to 6.0 V; VSS = 0 V; Tamb = 40 to +85 °C; unless otherwise specied.
Notes
1. Event counter mode only.
2. All timing values are valid within the operating supply voltage and ambient temperature range and reference to VIL
and VIH with an input voltage swing of VSS to VDD.
3. A detailed description of the I2C-bus specification, with applications, is given in brochure
“The I2C-bus and how to
use it”. This brochure may be ordered using the code 9398 393 40011.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Oscillator
Cosc
integrated oscillator
capacitance
20
25
30
pF
f
osc
oscillator stability
for
VDD = 100 mV;
Tamb =25 °C; VDD = 1.5 V
2
× 107
fi
input frequency
note 1
1
MHz
Quartz crystal parameters (f = 32.768 kHz)
Rs
series resistance
40
k
CL
parallel load capacitance
10
pF
CT
trimmer capacitance
5
25
pF
I2C-bus timing (see Fig.22; notes 2 and 3)
fSCL
SCL clock frequency
100
kHz
tSP
tolerable spike width on bus
100
ns
tBUF
bus free time
4.7
s
tSU;STA
START condition set-up time
4.7
s
tHD;STA
START condition hold time
4.0
s
tLOW
SCL LOW time
4.7
s
tHIGH
SCL HIGH time
4.0
s
tr
SCL and SDA rise time
1.0
s
tf
SCL and SDA fall time
0.3
s
tSU;DAT
data set-up time
250
ns
tHD;DAT
data hold time
0
ns
tVD;DAT
SCL LOW to data out valid
3.4
s
tSU;STO
STOP condition set-up time
4.0
s
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