参数资料
型号: ATTINY13V-10SUR
厂商: Atmel
文件页数: 169/176页
文件大小: 0K
描述: MCU AVR 1KB FLASH 10MHZ 8SOIC
产品培训模块: tinyAVR Introduction
标准包装: 2,000
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 10MHz
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 6
程序存储器容量: 1KB(512 x 16)
程序存储器类型: 闪存
EEPROM 大小: 64 x 8
RAM 容量: 64 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.209",5.30mm 宽)
包装: 带卷 (TR)
其它名称: ATTINY13V-10SUR-ND
ATTINY13V-10SURTR
PIC16(L)F720/721
DS41430C-page 92
Preliminary
2010-2011 Microchip Technology Inc.
12.1.3
SOFTWARE PROGRAMMABLE
PRESCALER
A single software programmable prescaler is available
for use with either Timer0 or the Watchdog Timer
(WDT), but not both simultaneously. The prescaler
assignment is controlled by the PSA bit of the
OPTION_REG register. To assign the prescaler to
Timer0, the PSA bit must be cleared to a ‘0’.
There are 8 prescaler options for the Timer0 module
ranging from 1:2 to 1:256. The prescale values are
selectable via the PS<2:0> bits of the OPTION_REG
register. In order to have a 1:1 prescaler value for the
Timer0 module, the prescaler must be assigned to the
WDT module.
The prescaler is not readable or writable. When
assigned to the Timer0 module, all instructions writing to
the TMR0 register will clear the prescaler.
12.1.4
TIMER0 INTERRUPT
Timer0 will generate an interrupt when the TMR0
register overflows from FFh to 00h. The TMR0IF
interrupt flag bit of the INTCON register is set every
time the TMR0 register overflows, regardless of
whether or not the Timer0 interrupt is enabled. The
TMR0IF bit can only be cleared in software. The Timer0
interrupt enable is the TMR0IE bit of the INTCON
register.
12.1.5
8-BIT COUNTER MODE
SYNCHRONIZATION
When in 8-Bit Counter Mode, the incrementing edge on
the T0CKI pin must be synchronized to the instruction
clock. Synchronization can be accomplished by
sampling the prescaler output on the Q2 and Q4 cycles
of the instruction clock. The high and low periods of the
external clocking source must meet the timing
requirements as shown in Section 23.0 “Electrical
Note:
When the prescaler is assigned to WDT, a
CLRWDT instruction will clear the prescaler
along with the WDT.
Note:
The Timer0 interrupt cannot wake the
processor from Sleep since the timer is
frozen during Sleep.
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