HT56R688 Просмотр технического описания (PDF) - Holtek Semiconductor
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производитель
HT56R688 Datasheet PDF : 104 Pages
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HT56R67/HT56R668/HT56C668/HT56R678/HT56C678/HT56R688
Symbol
Parameter
Test Conditions
VDD
Conditions
I/O Port Sink Current
3V
IOL1
(PA, PB, PD; SEG, COM Level or
VOL=0.1VDD
LED Output)
5V
I/O Port Source Current
3V
IOH1
(PA, PB, PD; SEG, COM Level or
VOH=0.9VDD
LED Output)
5V
IOL2
LCD Common and Segment
Current
3V
VOL=0.1VDD
5V
IOH2
LCD Common and Segment
Current
3V
VOH=0.9VDD
5V
RPH
Pull-high Resistance for I/O
Ports
3V
5V
¾
¾
Min. Typ. Max. Unit
6
12
¾
mA
10
25
¾
mA
-2
-4
¾
mA
-5
-8
¾
mA
210 420
¾
mA
350 700
¾
mA
-80 -160 ¾
mA
-180 -360 ¾
mA
20
60
100
kW
10
30
50
kW
Note:
1. 32768Hz is slow start mode (RTCC.4=1) in D.C. current measurement.
2. LCD waveform is in Type A condition.
3. fS is internal clock for Buzzer, RTC, Time base and WDT.
4. Timer0/1 off. Timer filter disable in all test condition.
5. All peripherals are in OFF condition if not mentioned at IDD, ISTB tests.
A.C. Characteristics
Symbol
Parameter
fSYS
System Clock
(Crystal OSC, RC OSC)
Test Conditions
VDD
Conditions
2.2V~5.5V
¾ 3.0V~5.5V
4.5V~5.5V
fRTCOSC RTC Frequency
¾
¾
fTIMER
Timer I/P Frequency
(TMR0/TMR1)
2.2V~5.5V
¾ 3.0V~5.5V
4.5V~5.5V
fRC32K
32K RC Oscillator
¾ 2.2V~5.5V, After Trim
tRES
External Reset Low Pulse Width ¾
¾
tLVR
Low Voltage Reset Time
¾
¾
tSST1
System Start-up Timer Period
¾ Power-on
tSST2
System Start-up Timer Period for
XTAL or RTC oscillator
¾
Wake-up from Power
Down Mode
tSST3
System Start-up Timer Period for
External RC or External Clock
¾
Wake-up from Power
Down Mode
tINT
Interrupt Pulse Width
¾
¾
Note: *tSYS=1/fSYS
Ta=25°C
Min. Typ. Max. Unit
100 ¾ 4000 kHz
100 ¾ 8000 kHz
100 ¾ 12000 kHz
¾ 32768 ¾
Hz
0
¾ 4000 kHz
0
¾ 8000 kHz
0
¾ 12000 kHz
28.8 32.0 35.2 kHz
1
¾
¾
ms
0.1 0.4
0.6
ms
¾ 1024 ¾
tSYS*
¾ 1024 ¾
tSYS*
¾
1
2
tSYS*
1
¾
¾
ms
Rev. 1.60
11
May 21, 2012
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