参数资料
型号: SAB-C161S-LM 3V AA
厂商: Infineon Technologies
文件页数: 43/75页
文件大小: 0K
描述: IC MICROCONTROLLER 16BIT MQFP80
标准包装: 850
系列: C16xx
核心处理器: C166
芯体尺寸: 16-位
速度: 20MHz
连通性: EBI/EMI,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 63
程序存储器类型: ROMless
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 3.6 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 80-QFP
包装: 带卷 (TR)
其它名称: B161SLM3VAAXT
C161SLM3VAABAUMA1
C161SLM3VAABXUMA1
SABC161SLM3VAAXT
SP000014946
C161S
Timing Characteristics
Data Sheet
44
V1.0, 2003-11
5
Timing Characteristics
5.1
Definition of Internal Timing
The internal operation of the C161S is controlled by the internal CPU clock
f
CPU. Both
edges of the CPU clock can trigger internal (e.g. pipeline) or external (e.g. bus cycles)
operations.
The specification of the external timing (AC Characteristics) therefore depends on the
time between two consecutive edges of the CPU clock, called “TCL” (see Figure 10).
Figure 10
Generation Mechanisms for the CPU Clock
The CPU clock signal
f
CPU can be generated from the oscillator clock signal fOSC via
different mechanisms. The duration of TCLs and their variation (and also the derived
external timing) depends on the used mechanism to generate
f
CPU. This influence must
be regarded when calculating the timings for the C161S.
Note: The example for PLL operation shown in Figure 10 refers to a PLL factor of 4.
The used mechanism to generate the basic CPU clock is selected by bitfield CLKCFG
in register RP0H.7-5. Upon a long hardware reset register RP0H is loaded with the logic
MCT04338
f
OSC
f
CPU
Phase Locked Loop Operation
TCL
f
OSC
f
CPU
Direct Clock Drive
f
OSC
f
CPU
Prescaler Operation
TCL
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