參數(shù)資料
型號(hào): AT90S4433-8AC
廠商: Atmel
文件頁數(shù): 58/126頁
文件大?。?/td> 0K
描述: IC MCU 4K FLSH 8MHZ A/D 32TQFP
標(biāo)準(zhǔn)包裝: 250
系列: AVR® 90S
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 20
程序存儲(chǔ)器容量: 4KB(2K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 6x10b
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 32-TQFP
包裝: 托盤
37
AT90S/LS4433
1042H–AVR–04/03
Timer/Counter1 Control
Register A – TCCR1A
Bits 7, 6 – COM11, COM10: Compare Output Mode1, Bits 1, and 0
The COM11 and COM10 control bits determine any output pin action following a
Compare Match in Timer/Counter1. Any output pin actions affect pin OC1 (Output
Compare pin 1). This is an alternative function to an I/O port, and the corresponding
direction control bit must be set (one) to control an output pin. The control configuration
is shown in Table 10.
In PWM mode, these bits have a different function. Refer to Table 11 for a detailed
description.
Bits 5..2 – Res: Reserved Bits
These bits are reserved bits in the AT90S4433 and always read as zero.
Bits 1, 0 – PWM11, PWM10: Pulse Width Modulator Select Bits
These bits select PWM operation of Timer/Counter1 as specified in Table 11. This mode
is described on page 41.
Bit
7
6
5
4
3
2
1
0
$2F ($4F)
COM11
COM10
PWM11
PWM10
TCCR1A
Read/Write
R/W
R
R/W
Initial Value
0
Table 10. Compare 1 Mode Select
COM11
COM10
Description
0
Timer/Counter1 disconnected from output pin OC1
0
1
Toggle the OC1 output line.
1
0
Clear the OC1 output line (to zero).
1
Set the OC1 output line (to one).
Table 11. PWM Mode Select
PWM11
PWM10
Description
0
PWM operation of Timer/Counter1 is disabled
0
1
Timer/Counter1 is an 8-bit PWM
1
0
Timer/Counter1 is a 9-bit PWM
1
Timer/Counter1 is a 10-bit PWM
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