參數(shù)資料
型號: HD4074629
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
中文描述: 由于微機安裝有雙音多頻發(fā)電機斷路器(微計算機帶雙音多頻發(fā)生器電路)
文件頁數(shù): 101/155頁
文件大?。?/td> 549K
代理商: HD4074629
HD404629R Series
101
System Clock Select Register (SSR: $029):
Four-bit write-only register. This register must be set to the
value specified in figure 91 depending on the frequency of the oscillator connected to the OSC
1
and OSC
2
pins. Note that if the combination of the oscillation frequency and the value in this register is different
from that specified in figure 91, the DTMF output frequencies will differ from the correct frequencies as
listed in figure 89.
Bit
Initial value
Read/Write
Bit name
3
0
W
SSR3
2
0
W
SSR2
0
0
W
SSR0
1
0
W
SSR1
System clock select register (SSR: $029)
SSR1
0
0
1
1
System clock selection
400 kHz
800 kHz
2 MHz
4 MHz
SSR0
0
1
0
1
SSR2
0
1
ratio selection
f
SUB
= f
X
/8
f
SUB
= f
X
/4
SSR3
0
1
32-kHz oscillation stop
Oscillation operates in stop mode
Oscillation stops in stop mode
32-kHz oscillation division
Note: SSR3 is cleared only by a RESET input. SSR3 will not be cleared by a
STOPC
input during stop
mode, and will retain its value. SSR3 will also not be cleared upon entering stop mode.
Figure 91 System Clock Select Register (SSR)
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相關代理商/技術參數(shù)
參數(shù)描述
HD4074629F 制造商:Renesas Electronics Corporation 功能描述:
HD4074629FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074629H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074629TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074654 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer