參數(shù)資料
型號: HD40A4639R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位單片機(jī)(4位單片微計(jì)算機(jī))
文件頁數(shù): 102/133頁
文件大小: 803K
代理商: HD40A4639R
HD404639R Series
102
Bit
Initial value
Read/Write
Bit name
3
0
W
SSR23
2
0
W
SSR22
0
0
W
SSR20
1
0
W
SSR21
SSR22
0
Serial clock select register 2 (SSR2: $02A)
SSR21
0
1
System clock division ratio
1/4 division
1/8 division
1/16 division
1/32 division
System clock selection
Selected from 400 kHz, 800 kHz,
2 MHz, 4 MHz
3.58 MHz
8 MHz
7.16 MHz
SSR20
0
1
0
1
Notes:
*
1
*
1
1. Refer to system clock select register 1 (SSR1) of figure 85.
2. The DTMF frequencies are not affected by the setting of the system clock division ratio.
1
0
1
SSR23
0
1
Figure 86 System Clock Select Register 2(SSR2)
Table 28 Frequency Deviation of the MCU from Standard DTMF
f
= 400 kHz, 800 kHz, 2 MHz, 4 MHz,
8 MHz
f
OSC
= 3.58 MHz, 7.16 MHz
Standard
DTMF (Hz)
MCU (Hz)
Deviation from
Standard (%)
MCU (Hz)
Deviation from
Standard (%)
R1
697
694.44
–0.37
690.58
–0.92
R2
770
769.23
–0.10
764.96
–0.65
R3
852
851.06
–0.11
846.33
–0.67
R4
941
938.97
–0.22
933.75
–0.77
C1
1,209
1,212.12
0.26
1,205.39
–0.30
C2
1,336
1,333.33
–0.20
1,325.92
–0.75
C3
1,477
1,481.48
0.30
1,473.25
–0.25
C4
Note:
1,633
1,639.34
0.39
1,630.23
–0.17
This frequency deviation value does not include the frequency deviation due to the oscillator
element. Also note that in this case the ratio of the high level and low level widths in the oscillator
waveform due to the oscillator element will be 50%:50%.
相關(guān)PDF資料
PDF描述
HD404639R 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
HD407A4639R 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī))
HD404652 4-Bit Single-Chip Microcomputer
HD404652H RES T 0.2E 5W 1%
HD404652S 4-Bit Single-Chip Microcomputer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD40A4639RF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD40A46612 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit
HD40A46612H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit
HD40A4668 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit
HD40A4668H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit