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參數(shù)資料
| 型號： | SAF-C161RI-LM |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | METRIC, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 33/60頁 |
| 文件大?。?/td> | 926K |
| 代理商： | SAF-C161RI-LM |
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Semiconductor Group
39
1998-05-01
C161RI
The table below associates the combinations of these three bits with the respective clock generation
mode.
1) The maximum frequency depends on the duty cycle of the external clock signal.
Prescaler Operation
When pins P0.15-13 (P0H.7-5) equal ‘001’ during reset the CPU clock is derived from the internal
oscillator (input clock signal) by a 2:1 prescaler.
The frequency of
f
CPU is half the frequency of fXTAL 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
f
XTAL.
The timings listed in the AC Characteristics that refer to TCLs therefore can be calculated using the
period of
f
XTAL for any TCL.
Direct Drive
When pins P0.15-13 (P0H.7-5) equal ‘011’ during reset the on-chip phase locked loop is disabled
and the CPU clock is directly driven from the internal oscillator with the input clock signal.
The frequency of
f
CPU directly follows the frequency of fXTAL 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
f
XTAL.
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/fXTAL × DCmin
(DC = duty cycle)
For two consecutive TCLs the deviation caused by the duty cycle of
f
XTAL is compensated so the
duration of 2TCL is always 1/
f
XTAL. The minimum value TCL
min 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/
f
XTAL.
Note: The address float timings in Multiplexed bus mode (
t11 and t45) use the maximum duration of
TCL (TCLmax = 1/fXTAL × DCmax) instead of TCLmin.
C161RI Clock Generation Modes
P0.15-13
(P0H.7-5)
CPU Frequency
f
CPU =
f
XTAL × F
Notes
1
Reserved
Default configuration without pull-downs
110
Reserved
101
Reserved
100
Reserved
011
f
XTAL × 1
Direct drive 1)
010
Reserved
001
f
XTAL / 2
CPU clock via prescaler
000
Reserved
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAB-C161RI-LF | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP100 |
| SAF-C161S-L25M | 16-BIT, 25 MHz, MICROCONTROLLER, PQFP80 |
| SAB-C161S-LM3V | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP80 |
| SAB-C161S-L25M | 16-BIT, 25 MHz, MICROCONTROLLER, PQFP80 |
| SAF-C501G-LN | 8-BIT, 12 MHz, MICROCONTROLLER, PQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAFC161S | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bit Single-Chip Microcontroller |
| SAF-C161S | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bit Single-Chip Microcontroller |
| SAF-C161S-L25M | 制造商:Infineon Technologies AG 功能描述:IC 16BIT MCU ROM/ROMLESS SMD 161 |
| SAF-C161S-L25M AA | 功能描述:16位微控制器 - MCU 16-Bit Single-Chip 5V 25MHz ROM less RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| SAF-C161S-L25M AATR | 制造商:Infineon Technologies AG 功能描述: |
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