參數(shù)資料
型號: M34507E4FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, MICROCONTROLLER, PDSO24
封裝: 5.30 X 10.10 MM, 0.80 MM PITCH, PLASTIC, SSOP-24
文件頁數(shù): 38/117頁
文件大?。?/td> 937K
代理商: M34507E4FP
4507 Group
Rev.3.01
2005.02.04
page 25 of 111
REJ03B0107-0301
Fig. 22 Timers structure
16-bit timer (WDT)
116
Instruction clock
Q
S
Q
T
D
WDF2
ORCLK
XIN
1/4
1/16
W13
0
1
0
1
W12
Division circuit
divided by 8
divided by 4
divided by 2
P12/CNTR
P12 output
0
1
W60
0
1
W23
(TR1AB)
T1F
T2F
(TAB1)
0
1
W11
W21,W20
11
10
01
00
1/2
0
1
W61
1/2
(T2AB)
(TAB2)
(TAB1)
(TAB2)
(Note 2)
T1ABT1AB
MR3, MR2
00
01
10
11
W10
0
1
Q
R
S
0
1
I12
0
1
I11
P13/INT
(Note 1)
I10
W22
Timer 1 underflow signal
I13
R
Q
R
S
WEF
Reset signal
(Note 5)
DWDT instruction
+
WRST instruction
(Note 4)
R
WDF1
WRST instruction
(Note 3)
Timer 1 (8)
Timer 1
interrupt
Reload register R1 (8)
Register B Register A
Timer 2 (8)
Reload register R2 (8)
Register B Register A
Timer 2
interrupt
Data is set automatically from each reload
register when timer 1 or 2 underflows
(auto-reload function)
Notes 1: Timer 1 count start synchronous circuit is set
by the valid edge of P13/INT pin selected by
bits 1 (I11) and 2 (I12) of register I1.
2: Count source is stopped by clearing to “0.”
3: When the WRST instruction is executed at
WDF1 flag = “1,” WDF1 flag is cleared to “0”
and the next instruction is skipped.
When the WRST instruction is executed at
WDF1 flag = “0,” skip is not executed.
4: When the DWDT and WRST instructions are
executed continuously, WEF flag is cleared to
“0” and reset by watchdog timer is not executed.
5: The WEF flag is set to “1” at system reset or
RAM back-up mode.
Instruction clock
Internal clock
generating circuit
(divided by 3)
Prescaler
One-sided edge
detection circuit
Both edges
detection circuit
Falling
Rising
Clock
generation
circuit
System clock
Timer 1 underflow signal
Timer 2 underflow signal
Reset signal
Watchdog
reset signal
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M34508G4GP#U0 功能描述:MCU 2/5V 4096 QZROM PB-FREE 20-S RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:720/4500 標準包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線 SIO,I²C,LIN,UART/USART 外圍設備:DMA,LVD,POR,PWM,WDT 輸入/輸出數(shù):27 程序存儲器容量:16KB(16K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:38-SSOP 包裝:托盤