參數(shù)資料
型號(hào): HT46C22
廠商: Holtek Semiconductor Inc.
英文描述: 8-Bit A/D Type MCU
中文描述: 8位A / D型微控制器
文件頁數(shù): 3/46頁
文件大小: 390K
代理商: HT46C22
Pad Assignment
HT46C22
* The IC substrate should be connected to VSS in the PCB layout artwork.
Pad Description
Pad Name
I/O
Options
Description
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4/AN4
PB5/AN5
PB6/AN6
PB7/AN7
I/O
Pull-high
Bidirectional 8-bit input/output port. Software instructions deter-
mine the CMOS output, Schmitt trigger input with or without
pull-high resistor (determined by pull-high option: port option) or
A/D input.
Once a PB line is selected as an A/D input (by using software
control), the I/O function and pull-high resistor are disabled auto-
matically.
PA0~PA2
PA3/PFD
PA4/TMR
PA5/INT
PA6/SDA
PA7/SCL
I/O
Pull-high
Wake-up
PA3 or PFD
I/O or Serial Bus
Bidirectional 8-bit input/output port. Each bit can be configured as
wake-up input by options. Software instructions determine the
CMOS output or Schmitt trigger input with or without pull-high resis-
tor(determinedbypull-highoptions:bitoption).The PFD, TMR and
INT are pin-shared with PA3, PA4 and PA5, respectively. Once
the I
2
C BUS function is used, the internal registers related to PA6
and PA7 can not be used.
VSS
Negative power supply, ground.
PC0~PC1
I/O
Pull-high
Bidirectional 2-bit input/output port. Software instructions deter-
mine the CMOS output, Schmitt trigger input with or without
pull-high resistor (determine by pull-high option: port option).
HT46R22/HT46C22
Rev. 1.10
3
October 2, 2002
9 7 :
1
3
0
4
8
1
3
0
8
4
8
4
0
3
1
1
1
1
3
0
0
0
3
3
1
2
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