參數(shù)資料
型號: HT48R05A-1
廠商: Holtek Semiconductor Inc.
英文描述: 8-Bit High Performance RISC-like OTP Microcontroller(8位、高性能、類似RISC、一次可編程微控制器,用于多I/O接口設(shè)備)
中文描述: 8位高性能RISC樣檢察官辦公室的微控制器(8位,高性能,類似的RISC,一次可編程微控制器,用于多的I / O接口設(shè)備)
文件頁數(shù): 3/44頁
文件大?。?/td> 290K
代理商: HT48R05A-1
Pin Description
Pin No.
Pin Name
I/O
ROM Code
Option
Description
4~1,
18~15
PA0~PA7
I/O
Pull-high*
Wake-up
Bidirectional 8-bit input/output port. Each bit can be
configured as wake-up input by ROM code option.
Software instructions determine the CMOS output or
schmitt trigger input with a pull-high resistor (deter-
mined by pull-high options).
7
6
5
PB0/BZ
PB1/BZ
PB2
I/O
Pull-high*
I/O or
BZ/BZ
Bidirectional 3-bit input/output port. Software in-
structions determine the CMOS output or schmitt
trigger input with a pull-high resistor (determined by
pull-high options).
The PB0 and PB1 are pin-shared with the BZ and BZ,
respectively. Once the PB0 and PB1 are selected as
buzzer driving outputs, the output signals come from
an internal PFD generator (shared with timer/event
counter).
8
VSS
Negative power supply, ground
9
10
PC0/INT
PC1/TMR
I/O
Pull-high*
Bidirectional I/O lines. Software instructions deter-
mine the CMOS output or SCHMITT trigger input
with a pull-high resistor (determined by pull-high op-
tions). The external interrupt and timer input are
pin-shared with the PC0 and PC1, respectively. The
external interrupt input is activated on a high to low
transition.
11
RES
I
Schmitt trigger reset input. Active low
12
VDD
Positive power supply
13
14
OSC1
OSC2
I
O
Crystal
or RC
OSC1, OSC2 are connected to an RC network or Crys-
tal (determined by ROM code option) for the internal
system clock. In the case of RC operation, OSC2 is the
output terminal for 1/4 system clock.
* All pull-high resistors are controlled by an option bit.
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-
mumRatings maycausesubstantialdamagetothedevice.Functionaloperationofthisdevice
at other conditions beyond those listed in the specification is not implied and prolonged expo-
sure to extreme conditions may affect device reliability.
HT48R05A-1
3
November 29, 2000
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