參數(shù)資料
型號(hào)： HT86070
廠商： Holtek Semiconductor Inc.
英文描述： Voice Synthesizer 8-Bit MCU
中文描述： 語音合成器8位微控制器
文件頁數(shù)： 19/40頁
文件大?。?/td> 256K
代理商： HT86070
HT86030/HT86070
Rev. 1.10
19
May 25, 2006
Input/Output Ports
There are 16 bidirectional input/output lines in the
microcontroller, labeled from PA to PB, which are
mapped to the data memory of [12H] and [14H] respec-
tively. All of these I/O ports can be used for input and
output operations. For input operation, these ports are
non-latching, that is, the inputs must be ready at the T2
rising edge of instruction MOV A, [m] (m=12H or 14H).
For output operation, all the data is latched and remains
unchanged until the output latch is rewritten.
Each I/O line has its own control register (PAC, PBC) to
control the input/output configuration. With this control
register, CMOS output or Schmitt trigger input with or
without pull-high resistor structures can be reconfigured
dynamically (i.e. on-the-fly) under software control. To
function as an input, the corresponding latch of the con-
trol register must write 1 . The input source also de-
pends on the control register. If the control register bit is
1 , the input will read the pad state. If the control regis-
ter bit is 0 , the contents of the latches will move to the
internal bus. The latter is possible in the
read-modify-write instruction.
For output function, CMOS is the only configuration.
These control registers are mapped to locations 13H
and 15H.
Afterachipreset,theseinput/outputlinesremainathigh
levels or floating state (dependent on pull-high options).
Each bit of these input/output latches can be set or
clearedby SET[m].i and CLR[m].i (m=12H,14H)in-
structions.
Some instructions first input data and then follow the
output operations. For example,
SET [m].i ,
CLR
[m].i , CPL [m] , CPLA[m] read the entire port states
into the CPU, execute the defined operations
(bit-operation), and then write the results back to the
latches or the accumulator.
Each line of port A has the capability of waking-up the
device. The wake-up capability of port A is determined
by mask option. There is a pull-high option available for
all I/O lines. Once the pull-high option is selected, all I/O
lines have pull-high resistors. Otherwise, the pull-high
resistors are absent. It should be noted that a
non-pull-high I/O line operating in input mode will cause
a floating state.
AudioOutputandVolumeControl
DAL,DAH,VOL
The HT86030/HT86070 provides one 12-bit voltage
type DAC device for driving external 8
through an external NPN transistor. The programmer
mustwritethevoicedatatoregisterDAL(27H)andDAH
(28H). The 12-bit audio output will be written to the
higher nibble of DALand the whole byte of DAH, and the
DAL3~0 is always read as 0H. There are 8 scales of vol-
ume controllable level that are provided for the voltage
type DAC output. The programmer can change the vol-
ume by only writing the volume control data to the
higher-nibble of the VOL (29H), and the lower-nibble of
VOL (29H) is always read as 0H.
speaker
Voice Control Register
The voice control register controls the voice ROM circuit
and DAC circuit, selects voice ROM latch counter. If the
DAC circuit is not enabled, any DAH/DAL output is in-
valid. Writing a 1 to DAC bit is to enable DAC circuit,
and writing a 0 to DAC bit is to disable DAC circuit. If
the voice ROM circuit is not enabled, then voice ROM
data cannot be accessed at all. Writing a 1 to VROMC
bitistoenablethevoiceROMcircuit,andwritinga 0 to
VROMC bit is to disable the voice ROM circuit. The bit 4
(LATCHC) is to determine what voice ROM address
latch counter will be adopted as voice ROM address
latch counter.
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Input/Output Ports
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