参数资料
型号: ATTINY15L-1PC
厂商: Atmel
文件页数: 26/85页
文件大小: 0K
描述: IC AVR MCU 1K FLASH 2.7V 8DIP
标准包装: 50
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 1.6MHz
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
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 8-DIP(0.300",7.62mm)
包装: 管件
32
ATtiny15L
1187H–AVR–09/07
Figure 22. Effects of Unsynchronized OCR Latching
During the time between the write and the latch operation, a read from OCR1A will read
the contents of the temporary location. This means that the most recently written value
always will read out of OCR1A.
When OCR1A contains $00 or the top value, as specified in OCR1B Register, the output
PB1(OC1A) is held low or high according to the settings of COM1A1/COM1A0. This is
shown in Table 13.
Timer/Counter1 Output
Compare RegisterB – OCR1B
The Output Compare Register1 (OCR1B) is an 8-bit read/write register. This register is
used in the PWM mode only, and it limits the top value to which the Timer/Counter1
keeps counting. After reaching OCR1B in PWM mode, the counter starts from $00.
In PWM mode, the Timer Overflow Flag (TOV1) is set as in normal Timer/Counter
mode. Timer Overflow Interrupt1 operates exactly as in normal Timer/Counter mode,
i.e., it is executed when TOV1 is set provided that Timer Overflow Interrupt and global
interrupts are enabled. This also applies to the Timer Output Compare A Flag and
interrupt.
PWM Output OC1A
Unsynchronized OC1A Latch
Synchronized OC1A Latch
Counter Value
Compare Value
Counter Value
Compare Value
Compare Value Changes
Glitch
Compare Value Changes
Bit
7
6
543
210
$2D
MSB
LSB
OCR1B
Read/Write
R/W
Initial Value
1
Table 13. PWM Outputs when OCR1A = $00 or OCR1B
COM1A1
COM1A0
OCR1B
Output PWMn
10
$00
L
1
0
OCR1B
H
11
$00
H
1
OCR1B
L
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