參數(shù)資料
型號: AT90S8535-8JI
廠商: Atmel
文件頁數(shù): 56/127頁
文件大小: 0K
描述: IC MCU 8K 8MHZ A/D IT 44PLCC
標(biāo)準(zhǔn)包裝: 27
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/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 8KB(4K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
34
AT90S/LS8535
1041H–11/01
Timer/Counter0 Control
Register – TCCR0
Bits 7..3 – Res: Reserved Bits
These bits are reserved bits in the AT90S8535 and always read zero.
Bits 2, 1, 0 – CS02, CS01, CS00: Clock Select0, Bits 2, 1 and 0
The Clock Select0 bits 2,1 and 0 define the prescaling source of Timer/Counter0.
The Stop condition provides a Timer Enable/Disable function. The prescaled CK modes
are scaled directly from the CK oscillator clock. If the external pin modes are used, the
corresponding setup must be performed in the actual Data Direction Control Register
(cleared to zero gives an input pin).
Timer Counter 0 – TCNT0
The Timer/Counter0 is realized as an up-counter with read and write access. If the
Timer/Counter0 is written and a clock source is present, the Timer/Counter0 continues
counting in the clock cycle following the write operation.
Bit
7
6
5
4
3
210
$33 ($53)
––
CS02
CS01
CS00
TCCR0
Read/Write
R
R/W
Initial Value
0
Table 10. Clock 0 Prescale Select
CS02
CS01
CS00
Description
0
Stop, Timer/Counter0 is stopped.
001
CK
010
CK/8
011
CK/64
100
CK/256
101
CK/1024
1
0
External Pin T0, falling edge
1
External Pin T0, rising edge
Bit
765
432
10
$32 ($52)
MSB
LSB
TCNT0
Read/Write
R/W
Initial Value
0
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