HT66F25D View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT66F25D' PDF : 177 Pages View PDF
A/D Flash Type 8-bit MCU with EEPROM
HT66F24D/HT66F25D
A.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
VDD
Condition
2.2~5.5V
—
fCPU
Operating Clock
2.7~5.5V
—
4.5~5.5V
—
2.2~5.5V
—
fSYS
System clock (HXT)
2.7~5.5V
—
4.5~5.5V
—
3V/5V Ta=25°C
3V/5V Ta=25°C
5V Ta=25°C
3V/5V Ta=0°C~70°C
3V/5V Ta=0°C~70°C
5V Ta=0°C~70°C
2.2V~3.6V Ta=0°C~70°C
fHIRC
System clock (HIRC)
3.0V~5.5V Ta=0°C~70°C
2.2V~3.6V Ta=0°C~70°C
3.0V~5.5V Ta=0°C~70°C
3.0V~5.5V Ta=0°C~70°C
2.2V~3.6V Ta=-40°C~85°C
3.0V~5.5V Ta=-40°C~85°C
2.2V~3.6V Ta=-40°C~85°C
3.0V~5.5V Ta=-40°C~85°C
3.0V~5.5V Ta=-40°C~85°C
fLXT
System Clock (LXT)
—
—
fLIRC
System Clock (LIRC)
5V Ta = 25°C
2.2V~5.5V Ta = -40°C to 85°C
tTIMER TCKn Input Pin Pulse Width
—
—
tINT
Interrupt Pulse Width
—
—
System Start-up Timer Period
(Wake-up from HALT,
tSST
fSYS off at HALT state)
System Start-up Timer Period
(Wake-up from HALT,
fSYS on at HALT state)
—
fSYS = HXT
—
fSYS = HIRC
—
fSYS = LIRC
—
—
System Reset Delay Time
(Power On Reset)
—
—
tRSTD
System Reset Delay Time
(Any Reset except Power On Reset)
—
—
tEERD
EEPROM Read Time
—
fSYS = 20MHz
tEEWR EEPROM Write Time
—
—
Min.
DC
DC
DC
0.4
0.4
0.4
-2%
-2%
-2%
-5%
-4%
-5%
-7%
-5%
-6%
-4%
-6%
-12%
-10%
-15%
-8%
-12%
—
-10%
-30%
0.3
10
128
16
2
2
25
8.3
—
1
Typ.
—
—
—
—
—
—
4
8
12
4
8
12
4
4
8
8
12
4
4
8
8
12
32768
32
32
—
—
—
—
—
—
50
16.7
—
2
Max.
8
12
20
8
12
20
+2%
+2%
+2%
+5%
+4%
+3%
+7%
+9%
+4%
+9%
+7%
+8%
+9%
+4%
+9%
+7%
—
+10%
+60%
—
—
—
—
—
—
100
33.3
4
4
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Hz
kHz
kHz
μs
μs
tSYS
tSYS
tSYS
tSYS
ms
ms
tSYS
ms
Note: 1. tSYS=1/fSYS
2. To maintain the accuracy of the internal HIRC oscillator frequency, a 0.1mF decoupling capacitor should
be connected between VDD and VSS and located as close to the device as possible.
Rev. 1.10
14
March 25, 2013
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