參數(shù)資料
型號: HS4339ESF01H
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer with large-capacity memory
中文描述: 4位HMCS400系列的大容量存儲器微機
文件頁數(shù): 26/78頁
文件大?。?/td> 337K
代理商: HS4339ESF01H
HD404339 Series
26
Oscillator Circuit
Figure 18 shows a block diagram of the clock generation circuit. The system clock frequency of the
oscillator connected to OSC
1
and OSC
2
can be selected by system clock selection registers 1 and 2 (SSR1,
2: $027, $028) as shown in figures 20 and 21.
The system clock division ratio can be set by software to be 1/4, 1/8, 1/16, or 1/32. The subsystem clock
division ratio can be set by software to be 1/4 or 1/8.
OSC
2
OSC
1
X1
X2
System
oscillator
Sub-
system
oscillator
1/4, 1/8,
1/16, or
1/32
division
circuit
Timing
generator
circuit
System
clock
selection
CPU with ROM,
RAM, registers,
flags, and I/O
Peripheral
function
interrupt
Time-base
interrupt
Time-base
clock
selection
1/8 or 1/4
division
circuit
Timing
generator
circuit
Timing
generator
circuit
1/8
division
circuit
f
W
t
Wcyc
f
SUB
t
subcyc
LSON
TMA3
f
cyc
t
cyc
f
OSC
f
X
CPU
PER
CLK
Notes: 1.
2.
The system clock division ratio can be selected by setting bit 1 or 0 of the system
clock select register 2 (SSR2: $028).
The system clock division ratio can be selected by setting bit 2 of the system
clock select register 1 (SSR1: $027).
*
1
*
2
Figure 18 Clock Generation Circuit
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HS4339ESS01H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer with large-capacity memory
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HS-4-4 功能描述:HEX SPACER FOR #4 SCREW 1/2" RoHS:是 類別:硬件,緊固件,配件 >> 電路板襯墊,支座 系列:HS 標(biāo)準包裝:100 系列:- 類型:圓形,無螺紋,母形/母形 尺寸:0.250"(6.35mm)1/4" 外徑 螺紋/螺釘/孔尺寸:#4,0.120"(3.05mm)內(nèi)徑 長度 - 總體:1.000"(25.40mm) 材質(zhì):酚醛塑料 顏色:自然色 鍍層:- 板間高度:1.000"(25.40mm)1" 其它名稱:364K