參數(shù)資料
型號: M34556M8H-XXXFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42
封裝: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù): 74/147頁
文件大?。?/td> 1087K
代理商: M34556M8H-XXXFP
Rev.3.02
Dec 22, 2006
page 30 of 142
REJ03B0025-0302
4556 Group
Fig. 22 Timer structure (1)
Division circuit
System clock (STCK)
XCIN
Instruction clock
(INSTCK)
Multi-
plexer
(CRCK)
MR1, MR0
00
01
10
ORCLK
Reload register RPS (8)
Prescaler (8)
Register B
Register A
(TABPS)(TABPS)
(TPSAB)
PA0
MR3, MR2
01
00
10
11
PWMOUT
0
1
Q
R
S
0
1
I12
0
1
D5/INT
W13
T1UDF
I10
I13
I11
I10
W11, W10
10
11
01
00
ORCLK
T3UDF
C/CNTR
T1F
(TAB1)
(T1AB)
(T1AB)(T1AB)
(TPSAB)
W21
1
W20
0
T2F
On-chip oscillator
XIN
Ceramic resonance
RC oscillation
Timer 1 (8)
Timer 1
interrupt
Reload register R1 (8)
Register B Register A
Timer 1 underflow signal
One-sided edge
detection circuit
Both edges
detection circuit
(TAB2)(TAB2)
(T2AB)
Timer 2 (8)
Reload register R2L (8)
Register B Register A
Timer 2
interrupt
Internal clock
generating circuit
(divided by 3)
Quartz-crystal oscillation
W12
0
1
W40
PWMOUT
Q
R
D
T
W12
T1UDF
W41
1/2
Port C output
XIN
ORCLK
Reload register R2H (8)
(T2HAB)
Register B Register A
Reload control circuit
“H” interval expansion
0
W22
1
Q
R
T
PWMOD
W23
(T2R2L)
Divided by 2
Divided by 4
Divided by 8
W10 W11
(T1UDF)
Data is set automatically from each
reload register when timer underflows
(auto-reload function).
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