参数资料
型号: PIC16C620A-04E/P
厂商: Microchip Technology
文件页数: 14/89页
文件大小: 0K
描述: IC MCU OTP 512X14 COMP 18DIP
产品培训模块: Asynchronous Stimulus
标准包装: 25
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 13
程序存储器容量: 896B(512 x 14)
程序存储器类型: OTP
RAM 容量: 96 x 8
电压 - 电源 (Vcc/Vdd): 2.5 V ~ 5.5 V
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 18-DIP(0.300",7.62mm)
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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