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型号： PIC12C509A-04E/SM
厂商： Microchip Technology
文件页数： 32/113页
文件大小： 0K
描述： IC MCU OTP 1KX12 8-SOIJ
产品培训模块： Asynchronous Stimulus
标准包装： 90
系列： PIC® 12C
核心处理器： PIC
芯体尺寸： 8-位
速度： 4MHz
外围设备： POR，WDT
输入/输出数： 5
程序存储器容量： 1.5KB（1K x 12）
程序存储器类型： OTP
RAM 容量： 41 x 8
电压 - 电源 (Vcc/Vdd)： 3 V ~ 5.5 V
振荡器型： 内部
工作温度： -40°C ~ 125°C
封装/外壳： 8-SOIC（0.209"，5.30mm 宽）
包装： 管件
配用： XLT08SO-1-ND - SOCKET TRANSITION 8SOIC 150/208
AC164312-ND - MODULE SKT FOR PM3 16SOIC
309-1048-ND - ADAPTER 8-SOIC TO 8-DIP
309-1047-ND - ADAPTER 8-SOIC TO 8-DIP
1999 Microchip Technology Inc.
DS40139E-page 25
PIC12C5XX
6.0
TIMER0 MODULE AND
TMR0 REGISTER
The Timer0 module has the following features:
8-bit timer/counter register, TMR0
- Readable and writable
8-bit software programmable prescaler
Internal or external clock select
- Edge select for external clock
Figure 6-1 is a simplified block diagram of the Timer0
module.
Timer mode is selected by clearing the T0CS bit
(OPTION<5>). In timer mode, the Timer0 module will
increment every instruction cycle (without prescaler). If
TMR0 register is written, the increment is inhibited for
the following two instruction cycles (Figure 6-2 and
Figure 6-3). The user can work around this by writing
an adjusted value to the TMR0 register.
Counter mode is selected by setting the T0CS bit
(OPTION<5>). In this mode, Timer0 will increment
either on every rising or falling edge of pin T0CKI. The
T0SE bit (OPTION<4>) determines the source edge.
Clearing the T0SE bit selects the rising edge.
Restrictions on the external clock input are discussed
in detail in Section 6.1.
The prescaler may be used by either the Timer0
module or the Watchdog Timer, but not both. The
prescaler assignment is controlled in software by the
control bit PSA (OPTION<3>). Clearing the PSA bit
will assign the prescaler to Timer0. 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 6.2 details the
operation of the prescaler.
A summary of registers associated with the Timer0
module is found in Table 6-1.
FIGURE 6-1:
TIMER0 BLOCK DIAGRAM
Note 1: Bits T0CS, T0SE, PSA, PS2, PS1 and PS0 are located in the OPTION register.
2: The prescaler is shared with the Watchdog Timer (Figure 6-5).
0
1
0
T0CS(1)
FOSC/4
Programmable
Prescaler(2)
Sync with
Internal
Clocks
TMR0 reg
PSout
(2 TCY delay)
PSout
Data bus
8
PSA(1)
PS2, PS1, PS0(1)
3
Sync
T0SE
GP2/T0CKI
Pin
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相关代理商/技术参数
参数描述
PIC12C509A-04I/JW 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller
PIC12C509A-04I/MF 功能描述:8位微控制器 -MCU 1.5KB 41 RAM 6 I/O 4MHz IndTemp DFN8 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC12C509A-04I/P 功能描述:8位微控制器 -MCU 1.5KB 41 RAM 6 I/O 4MHz Ind Temp PDIP8 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC12C509A-04I/P 制造商:Microchip Technology Inc 功能描述:IC 8-BIT CMOS MCU
PIC12C509A-04I/P 制造商:Microchip Technology Inc 功能描述:Microcontroller IC Number of I/Os:5
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