參數(shù)資料
型號: AT90S2313-10PC
廠商: Atmel
文件頁數(shù): 22/92頁
文件大小: 0K
描述: IC MCU 2K FLSH 10MHZ UART 20DIP
標(biāo)準(zhǔn)包裝: 18
系列: AVR® 90S
核心處理器: AVR
芯體尺寸: 8-位
速度: 10MHz
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): 15
程序存儲器容量: 2KB(1K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 128 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
29
AT90S2313
0839I–AVR–06/02
Timer/Counter0 Control
Register – TCCR0
Bits 7..3 – Res: Reserved Bits
These bits are reserved bits in the AT90S2313 and always read zero.
Bits 2,1,0 – CS02, CS01, CS00: Clock Select0, Bit 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 CK down divided
modes are scaled directly from the CK Oscillator clock. If the external pin modes are
used for Timer/Counter0, transitions on PD4/(T0) will clock the counter even if the pin is
configured as an output. This feature can give the user software control of the counting.
Timer/Counter0 – 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 timer clock cycle following the write operation.
Bit
7
6
5
4
3
2
1
0
$33 ($53)
––
CS02
CS01
CS00
TCCR0
Read/Write
R
R/W
Initial value
0
Table 7. Clock 0 Prescale Select
CS02
CS01
CS00
Description
0
Stop, the Timer/Counter0 is stopped.
001
CK
010
CK/8
011
CK/64
100
CK/256
1
0
1
CK/1024
1
0
External Pin T0, falling edge
1
External Pin T0, rising edge
Bit
7654
3210
$32 ($52)
MSB
LSB
TCNT0
Read/Write
R/W
Initial value
0000
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