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參數(shù)資料
| 型號(hào)： | HT48R30A |
| 廠商： | Holtek Semiconductor Inc. |
| 元件分類： | 數(shù)學(xué)處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 4/43頁 |
| 文件大?。?/td> | 710K |
| 代理商： | HT48R30A |
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Pin Name I/O
ROM Code
Option
Description
RES
I
Schmitt trigger reset input. Active low
VDD
Positive power supply
OSC1/PG1
OSC2/PG2
I
O
Pull-high*
Crystal
or RC
or Int. RC+I/O
or Int.
RC+RTC
OSC1, OSC2 are connected to an RC network or Crystal (deter-
mined by ROM code option) for the internal system clock. In the
case of RC operation, OSC2 is the output terminal for 1/4 sys-
tem clock. These two pins can also be optioned as an RTC oscil-
lator (32768Hz) or I/O lines. In these two cases, the system
clock comes from an internal RC oscillator whose frequency has
4 options (3.2MHz, 1.6MHz, 800kHz, 400kHz). If the I/O option
is selected, the pull-high options can also be enabled or dis-
abled. Otherwise the PG1 and PG2 are used as internal regis-
ters (pull-high resistors are always disabled).
Note: * The pull-high resistors of each I/O port (PA, PB, PC, PG) are controlled by 1-bit ROM code
option.
CMOS or Schmitt trigger option of port A is controlled by 1-bit ROM code option.
Absolute Maximum Ratings
Supply Voltage...............V
SS
0.3V to V
SS
+5.5V
Storage Temperature ................ 50 C to 125 C
Input Voltage.................V
SS
0.3V to V
DD
+0.3V
Operating Temperature.............. 40 C to 85 C
Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maxi-
mum Ratings" may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged expo-
sure to extreme conditions may affect device reliability.
D.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
V
DD1
Operating Voltage
f
SYS
=4MHz
3.3
5.5
V
V
DD2
Operating Voltage
f
SYS
=8MHz
4.5
5.5
V
I
DD1
Operating Current
(Crystal OSC)
3.3V
No load, f
SYS
=4MHz
1
2
mA
5V
3
5
mA
I
DD2
Operating Current
(RC OSC)
3.3V
No load, f
SYS
=4MHz
1
2
mA
5V
3
5
mA
I
DD3
Operating Current
(Crystal OSC)
5V
No load, f
SYS
=8MHz
4
8
mA
I
STB1
Standby Current
(WDT Enabled RTC Off)
3.3V
Noload,systemHALT
5
A
5V
10
A
HT48R30A-1
Rev. 1.10
4
July 2, 2001
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