參數(shù)資料
型號: HD40A4638R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
中文描述: 4位單片機(jī)(4位單片微計算機(jī))
文件頁數(shù): 99/133頁
文件大小: 803K
代理商: HD40A4638R
HD404639R Series
99
Sine wave
counter D/A
Transforma-
tion program
divider
Feedback
Sine wave
counter D/A
Transforma-
tion program
divider
Feedback
TONER
VT
ref
TONEC
TONER output control
TONEC output control
f
OSC
Tone generator
control register
(TGC)
System clock
selection register 1
(SSR1)
System clock
selection register 2
(SSR2)
*
1
400 kHz
*
3
2
2
2
1
Selector
Tone generator
mode register
(TGM)
Notes: 1.
2.
3.
System clock selection register 2 (SSR2) is used to specify the divide-by-9 or divide-by-18 operation
when a 3.58-MHz or 7.16 MHz system clock oscillator is used.
Applies to HD40A4638R, HD40A4639R and HD407A4639R.
This is 397.8 kHz when f
OSC
is 3.58 MHz and 7.16 MHz.
I
1/2
1/5
1/9
*
3
1/10
1/18
*
3
1/20
400 kHz
800 kHz
2 MHz
3.58 MHz
4 MHz
7.16 MHz
*
2
8 MHz
*
2
Figure 82 Block Diagram of DTMF Generator Circuit
相關(guān)PDF資料
PDF描述
HD40A4639R 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
HD404639R 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
HD407A4639R 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
HD404652 4-Bit Single-Chip Microcomputer
HD404652H RES T 0.2E 5W 1%
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