參數(shù)資料
型號(hào)： HT48R10A-1
廠商： Holtek Semiconductor Inc.
英文描述： 8-Bit High Performance RISC-like Microcontroller Suitable for Multiple I/O Application(高性能、指令類似RISC的8位微控制器，用于多I/O接口設(shè)備)
中文描述： 8位高性能RISC架構(gòu)微控制器等的多個(gè)I / O應(yīng)用（高性能，指令類似的RISC的8位微控制器，用于多予適用/輸出接口設(shè)備）
文件頁(yè)數(shù)： 3/45頁(yè)
文件大?。?/td> 321K
代理商： HT48R10A-1
Pad Description
Pad Name
I/O
ROM Code
Option
Description
PA0~PA7
I/O
Pull-high*
Wake-up
/schmitt Trig-
ger Input
Bidirectional 8-bit input/output port. Each bit can be config-
ured as wake-up input by ROM code option. Software instruc-
tions determine the CMOS output or schmitt trigger or CMOS
input (depends on an options) with pull-high resistor (deter-
mined by 1-bit pull-high options).
PB0/BZ
PB1/BZ
PB2~PB7
I/O
Pull-high*
PB0 or BZ
PB1 or BZ
Bidirectional 8-bit input/output port. Software instructions
determine the CMOS output or schmitt trigger input with
pull-high resistor (determined by pull-high options).
The PB0 and PB1 are pin-shared with the BZ and BZ, respec-
tively. Once the PB0 or PB1 is selected as buzzer driving out-
puts, the output signals come from an internal PFD generator
(shared with timer/event counter).
VSS
Negative power supply, ground
PC0/INT
PC1/TMR
PC2
I/O
Pull-high*
Bidirectional I/O lines. Software instructions determine the
CMOS output or schmitt trigger input with pull-high resistor
(determined by 1-bit pull-high options). The external inter-
ruptandtimerinputarepin-sharedwiththePC0andPC1,re-
spectively. The external interrupt input is activated on a high
to low transition.
RES
I
Schmitt trigger reset input. Active low
VDD
Positive power supply
OSC1/PC3
OSC2/PC4
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 (de-
termined 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. These two pins also can be optioned as an
RTC oscillator (32768Hz) or I/O lines. In these two cases, the
system clock comes from an internal RC oscillator whose fre-
quency has 4 options (3.2MHz, 1.6MHz, 800kHz, 400kHz). If
the I/O option is selected, the pull-high options also be en-
abled. Otherwise the PC3 and PC4 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) are controlled by 1-bit ROM code
options.
CMOS or schmitt trigger option of port A is controlled by 1-bit ROM code option.
HT48R10A-1
3
November 29, 2000
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