參數(shù)資料
型號： HTVDS84
廠商： Holtek Semiconductor Inc.
英文描述： 8-Bit High Performance Microcontroller With Macro Instruction and Voice Synthesizer and Tone Generator(高性能、8位微控制器，帶宏指令、聲話音成器和聲音發(fā)生器)
中文描述： 8位高性能微控制器，帶有宏觀指導(dǎo)和語音合成器和音發(fā)生器（高性能，8位微控制器，帶宏指令，聲話音成器和聲音發(fā)生器）
文件頁數(shù)： 23/44頁
文件大?。?/td> 275K
代理商： HTVDS84
No.
Mask Option
1
WDT enable or disable
2
CLRWDT times selection . This option defines how to clear WDT by instruction . One
time means that the CLR WDT instruction can clear the WDT . Two times means
that if both of the CLR WDT1 and CLR WDT2 instruction have been executed, only
then the WDT can be cleared.
3
Wake-up selection. This option defines the wake up capability. External I/O pins (PA
and PB) all have the capability to wake up the chip from a HALT.
4
Pull-high value selection. This option decides either 33k or 98k ohm resistor is active
in the input mode. Each bit of the I/O port can be independently selected.
MACRO Directives
Macro command
Macro Command
Description
Speech
Play the sound files indicated by the TrackNumber
SamplingRate
Assign sampling rate for SR1 or SR2 interrupt
SetAddress
Set address
ReadByte
Read a byte from the counter ROM to accumulator
FuncSetAddress
Set address by calling procedure
FuncReadByte
Read a byte from the counter ROM to accumulator by calling procedure
HTVDS84
23
June 7, 2000
These input/output lines remain at a high level
after a chip reset. Each bit of the input/output
latches can be set or cleared by the "SET [m].i"
and "CLR [m].i" (m=12H, 14H) instructions.
Some instructions will first input data and then
follow the output operations. For instance,
"SET [m].i", "CLR [m].i", "CPL[m]", and
"CPLA[m]" read the entire port state into the
CPU, execute the defined operations
(bit-operation), and then write the results back
to the latches or accumulator. Each line of port
Aand port B is capable of waking up the device.
The highest four bits of port A are not physi-
cally implemented. A "0" will return to reading
the highest four bits, but writing them will re-
sult with no operation.
CDS interface pin
The PB0 pin be allowed as CDS input pin by
mask option.
An active pull-high resistor constructs a
schmitt trigger structure and improves the effi-
ciency of input detection. The pull-high resistor
isabout900k
whentheinputvoltageofPB0is
lower than V
IL
. It turns out to be about 200k
when the input voltage is higher than V
IH
.
Mask option
The following table illustrates four kinds of
mask option in the VDS84 series. All of them
have to be defined to ensure a proper function-
ing system.
CDS
PB0
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