参数资料
型号: AT90S1200A-4SC
厂商: Atmel
文件页数: 14/71页
文件大小: 0K
描述: MCU 1K FLASH 4MHZ LV 20-SOIC
标准包装: 37
系列: AVR® 90S
核心处理器: AVR
芯体尺寸: 8-位
速度: 4MHz
连通性: SPI
外围设备: POR,WDT
输入/输出数: 15
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 ~ 6 V
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
包装: 管件
21
AT90S1200
0838H–AVR–03/02
Figure 19. Timer/Counter0 Block Diagram
The 8-bit Timer/Counter0 can select clock source from CK, prescaled CK or an external
pin. In addition it can be stopped as de scribed in th e sp ecification fo r th e
Timer/Counter0 Control Register (TCCR0). The overflow status flag is found in the
Timer/Counter Interrupt Flag Register (TIFR). Control signals are found in the
Timer/Counter0 Control Register (TCCR0). The interrupt enable/disable settings for
Timer/Counter0 are found in the Timer/Counter Interrupt Mask Register (TIMSK).
When Timer/Counter0 is externally clocked, the external signal is synchronized with the
oscillator frequency of the CPU. To assure proper sampling of the external clock, the
minimum time between two external clock transitions must be at least one internal CPU
clock period. The external clock signal is sampled on the rising edge of the internal CPU
clock.
The 8-bit Timer/Counter0 features both a high-resolution and a high-accuracy usage
with the lower prescaling opportunities. Similarly, the high prescaling opportunities make
the Timer/Counter0 useful for lower speed functions or exact timing functions with infre-
quent actions.
Timer/Counter0 Control
Register – TCCR0
Bits 7..3 – Res: Reserved Bits
These bits are reserved bits in the AT90S1200 and always read as zero.
T0
Bit
7
6
5
4
3210
$33
-
CS02
CS01
CS00
TCCR0
Read/Write
R
R/W
Initial Value
0
0000
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AT90S1200A-4YC 功能描述:8位微控制器 -MCU 1K Flash 3V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
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