參數資料
型號： PIC12CE674-10I/P
廠商： Microchip Technology
文件頁數： 63/129頁
文件大?。?/td> 0K
描述： IC MCU OTP 2KX14 A/D&EE 8DIP
產品培訓模塊： Asynchronous Stimulus
標準包裝： 60
系列： PIC® 12C
核心處理器： PIC
芯體尺寸： 8-位
速度： 10MHz
外圍設備： POR，WDT
輸入/輸出數： 5
程序存儲器容量： 3.5KB（2K x 14）
程序存儲器類型： OTP
EEPROM 大?。?/td> 16 x 8
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
數據轉換器： A/D 4x8b
振蕩器型： 內部
工作溫度： -40°C ~ 85°C
封裝/外殼： 8-DIP（0.300"，7.62mm）
包裝： 管件
1999 Microchip Technology Inc.
DS30561B-page 39
PIC12C67X
7.0
TIMER0 MODULE
The Timer0 module timer/counter has the following fea-
tures:
8-bit timer/counter
Readable and writable
8-bit software programmable prescaler
Internal or external clock select
Interrupt on overflow from FFh to 00h
Edge select for external clock
Figure 7-1 is a simplified block diagram of the Timer0
module.
Timer mode is selected by clearing bit T0CS
(OPTION<5>). In timer mode, the Timer0 module will
increment every instruction cycle (without prescaler). If
the TMR0 register is written, the increment is inhibited
for the following two instruction cycles (Figure 7-2 and
Figure 7-3). The user can work around this by writing
an adjusted value to the TMR0 register.
Counter mode is selected by setting bit T0CS
(OPTION<5>). In counter mode, Timer0 will increment
either on every rising or falling edge of pin RA4/T0CKI.
The incrementing edge is determined by the bit T0SE
(OPTION<4>). Clearing bit T0SE selects the rising
edge. Restrictions on the external clock input are dis-
cussed in detail in Section 7.2.
The prescaler is mutually exclusively shared between
the Timer0 module and the Watchdog Timer. The pres-
caler assignment is controlled in software by control bit
PSA (OPTION<3>). Clearing bit PSA will assign the
prescaler to the Timer0 module. The prescaler is not
readable or writable. When the prescaler is assigned to
the Timer0 module, prescale values of 1:2, 1:4, ...,
1:256 are selectable. Section 7.3 details the operation
of the prescaler.
7.1
Timer0 Interrupt
The TMR0 interrupt is generated when the TMR0 reg-
ister overflows from FFh to 00h. This overflow sets bit
T0IF (INTCON<2>). The interrupt can be masked by
clearing bit T0IE (INTCON<5>). Bit T0IF must be
cleared in software by the Timer0 module interrupt ser-
vice routine before re-enabling this interrupt. The
TMR0 interrupt cannot awaken the processor from
SLEEP, since the timer is shut off during SLEEP. See
Figure 7-4 for Timer0 interrupt timing.
FIGURE 7-1:
TIMER0 BLOCK DIAGRAM
FIGURE 7-2:
TIMER0 TIMING: INTERNAL CLOCK/NO PRESCALE
Note 1:
TOCS, TOSE, PSA, PS<2:0> (OPTION<5:0>).
2: The prescaler is shared with Watchdog Timer (refer to Figure 7-6 for detailed block diagram).
GP2/TOCKI/
TOSE
0
1
0
AN2/INT
TOCS
FOSC/4
Programmable
Prescaler
Sync with
Internal
clocks
TMR0
(2 TCY delay)
Data Bus
8
PSA
PS<2:0>
Set interrupt
flag bit T0IF
on overflow
3
PC-1
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
PC
(Program
Counter)
Instruction
Fetch
TMR0
PC
PC+1
PC+2
PC+3
PC+4
PC+5
PC+6
T0
T0+1
T0+2
NT0
NT0+1
NT0+2
T0
MOVWF TMR0 MOVF TMR0,WMOVF TMR0,WMOVF TMR0,WMOVF TMR0,WMOVF TMR0,W
Write TMR0
executed
Read TMR0
reads NT0
Read TMR0
reads NT0
Read TMR0
reads NT0
Read TMR0
reads NT0 + 1
Read TMR0
reads NT0 + 2
Instruction
Executed
相關PDF資料
PDF描述
VE-B3B-CU-F2 CONVERTER MOD DC/DC 95V 200W
VE-2TV-IY-B1 CONVERTER MOD DC/DC 5.8V 50W
PIC12CE673-10I/P IC MCU OTP 1KX14 A/D&EE 8DIP
VE-2TR-IY-B1 CONVERTER MOD DC/DC 7.5V 50W
VE-B34-CU-F4 CONVERTER MOD DC/DC 48V 200W
相關代理商/技術參數
參數描述
PIC12CE67X 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory
PIC12CR509 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontrollers
PIC12CR509A 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontrollers
PIC12CR509A-04/EJW 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontrollers
PIC12CR509A-04/EP 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontrollers
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*