参数资料
型号: DSPIC30F3012-30I/SO
厂商: Microchip Technology
文件页数: 85/161页
文件大小: 0K
描述: IC DSPIC MCU/DSP 24K 18SOIC
产品培训模块: Serial Communications using dsPIC30F I2C
Serial Communications using dsPIC30F SPI
Serial Communications using dsPIC30F UART
dsPIC30F 12 bit ADC - Part 2
dsPIC30F Addressing Modes - Part 1
dsPIC30F Architecture - Part 1
dsPIC30F DSP Engine & ALU
dsPIC30F Interrupts
dsPIC30F Motor Control PWM
dsPIC Timers
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
标准包装: 42
系列: dsPIC™ 30F
核心处理器: dsPIC
芯体尺寸: 16-位
速度: 30 MIP
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 12
程序存储器容量: 24KB(8K x 24)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.5 V ~ 5.5 V
数据转换器: A/D 8x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 18-SOIC(0.295",7.50mm 宽)
包装: 管件
产品目录页面: 651 (CN2011-ZH PDF)
配用: XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
AC30F005-ND - MODULE SCKT DSPIC30F 18DIP/SOIC
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名称: DSPIC30F301230ISO
PIC18F46J11 FAMILY
DS39932D-page 204
2011 Microchip Technology Inc.
13.2
Timer1 Operation
The Timer1 module is an 8-bit or 16-bit incrementing
counter,
which
is
accessed
through
the
TMR1H:TMR1L register pair.
When used with an internal clock source, the module is
a timer and increments on every instruction cycle.
When used with an external clock source, the module
can be used as either a timer or counter and
increments on every selected edge of the external
source.
Timer1 is enabled by configuring the TMR1ON and
TMR1GE bits in the T1CON and T1GCON registers,
respectively.
When Timer1 is enabled, the RC1/T1OSI/RP12 and
RC0/T1OSO/T1CKI/RP11 pins become inputs. This
means the values of TRISC<1:0> are ignored and the
pins are read as ‘0’.
13.3
Clock Source Selection
The TMR1CS<1:0> and T1OSCEN bits of the T1CON
register are used to select the clock source for Timer1.
Register 13-1 displays the clock source selections.
When switching clock sources and using the clock
prescaler, write to TMR1L afterwards to reset the
internal prescaler count to 0.
13.3.1
INTERNAL CLOCK SOURCE
When the internal clock source is selected, the
TMR1H:TMR1L register pair will increment on multiples
of FOSC as determined by the Timer1 prescaler.
13.3.2
EXTERNAL CLOCK SOURCE
When the external clock source is selected, the Timer1
module may work as a timer or a counter.
When enabled to count, Timer1 is incremented on the
rising edge of the external clock input, T1CKI, or the
capacitive sensing oscillator signal. Either of these
external clock sources can be synchronized to the
microcontroller system clock or they can run
asynchronously.
When used as a timer with a clock oscillator, an
external 32.768 kHz crystal can be used in conjunction
with the dedicated internal oscillator circuit.
TABLE 13-1:
TIMER1 CLOCK SOURCE SELECTION
Note:
In Counter mode, a falling edge must be
registered by the counter prior to the first
incrementing rising edge after any one or
more of the following conditions:
Timer1 enabled after POR Reset
Write to TMR1H or TMR1L
Timer1 is disabled
Timer1 is disabled (TMR1ON = 0)
when T1CKI is high, then Timer1 is
enabled (TMR1ON = 1) when T1CKI is
low.
TMR1CS1
TMR1CS0
T1OSCEN
Clock Source
01
x
Clock Source (FOSC)
00
x
Instruction Clock (FOSC/4)
10
0
External Clock on T1CKI Pin
10
1
Oscillator Circuit on T1OSI/T1OSO Pin
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