When prescaler operation is configured (CLKCFG = 1XX
參數(shù)資料
型號(hào)： SAB-C161K-LM HA
廠商： Infineon Technologies
文件頁數(shù)： 36/66頁
文件大?。?/td> 0K
描述： IC MICROCONTROLLER 16BIT MQFP80
標(biāo)準(zhǔn)包裝： 504
系列： C16xx
核心處理器： C166
芯體尺寸： 16-位
速度： 20MHz
連通性： EBI/EMI，SPI，UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 63
程序存儲(chǔ)器類型： ROMless
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 80-QFP
包裝： 托盤
其它名稱： B161KLMHAXP
C161KLMHABAQMA1
C161KLMHABXQMA1
SABC161KLMHAXT
SP000011584
SP000011585
C161K
C161O
Data Sheet
37
V2.0, 2001-01
Prescaler Operation
When prescaler operation is configured (CLKCFG = 1XXB) the CPU clock is derived
from the internal oscillator (input clock signal) by a 2:1 prescaler.
The frequency of
fCPU is half the frequency of fOSC and the high and low time of fCPU (i.e.
the duration of an individual TCL) is defined by the period of the input clock
fOSC.
The timings listed in the AC Characteristics that refer to TCLs therefore can be
calculated using the period of
fOSC for any TCL.
Direct Drive
When direct drive is configured (CLKCFG = 0XXB) the CPU clock is directly driven from
the internal oscillator with the input clock signal.
The frequency of
fCPU directly follows the frequency of fOSC so the high and low time of
fCPU (i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock
fOSC.
The timings listed below that refer to TCLs therefore must be calculated using the
minimum TCL that is possible under the respective circumstances. This minimum value
can be calculated via the following formula:
TCLmin = 1/fOSC × DCmin
(DC = duty cycle)
For two consecutive TCLs the deviation caused by the duty cycle of
fOSC is compensated
so the duration of 2TCL is always 1/
fOSC. The minimum value TCLmin therefore has to
be used only once for timings that require an odd number of TCLs (1, 3, …). Timings that
require an even number of TCLs (2, 4, …) may use the formula 2TCL = 1/
fOSC.
Table 9
C161K/O Clock Generation Modes
CLKCFG
(P0H.7-5)
CPU Frequency
fCPU = fOSC × F
External Clock
Input Range
Notes
0X X
fOSC × 1
1 to 25 MHz
Direct drive1)
1X X
fOSC / 2
2 to 50 MHz
CPU clock via prescaler
1) The maximum frequency depends on the duty cycle of the external clock signal.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SABC161KLM-HA 制造商:Infineon Technologies AG 功能描述:MCU 16-Bit C166 CISC/RISC ROMLess 5V 80-Pin MQFP
SABC161KLMHA/TR 制造商:Infineon Technologies AG 功能描述:
SABC161KLMHAXT 制造商:Infineon Technologies AG 功能描述:MCU 16-bit C166 CISC/RISC ROMLess 5V 80-Pin MQFP
SAB-C161O-L16M 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bit CMOS Single-Chip Microcontroller
SAB-C161O-L25M 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述:Micro,16-Bit,2KB RAM ,25Mhz
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