參數(shù)資料
型號(hào)： SAF-C165-LF3V
廠商： INFINEON TECHNOLOGIES AG
英文描述： 16-Bit Single-Chip Microcontroller
中文描述： 16位單片機(jī)
文件頁(yè)數(shù)： 45/77頁(yè)
文件大小： 1371K
代理商： SAF-C165-LF3V
C165
Data Sheet
41
V2.0, 2000-12
Prescaler Operation
When prescaler operation is configured (CLKCFG = 1XX
B
) 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
f
OSC
and the high and low time of
f
CPU
(i.e.
the duration of an individual TCL) is defined by the period of the input clock
f
OSC
.
The timings listed in the AC Characteristics that refer to TCLs therefore can be
calculated using the period of
f
OSC
for any TCL.
Direct Drive
When direct drive is configured (CLKCFG = 0XX
B
) 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
f
OSC
so the high and low time of
f
CPU
(i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock
f
OSC
.
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:
TCL
min
= 1/
f
OSC
×
DC
min
(DC = duty cycle)
For two consecutive TCLs the deviation caused by the duty cycle of
f
OSC
is compensated
so the duration of 2TCL is always 1/
f
OSC
. 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
OSC
.
Table 9
CLKCFG
(P0H.7-5)
0 X X
1 X X
C165 Clock Generation Modes
CPU Frequency
f
CPU
=
f
OSC
×
F
f
OSC
×
1
f
OSC
/ 2
External Clock
Input Range
1)
1 to 25 MHz
2 to 50 MHz
1)
The external clock input range refers to a CPU clock range of 10 … 25 MHz (PLL operation).
2)
The maximum frequency depends on the duty cycle of the external clock signal.
Notes
Direct drive
2)
CPU clock via prescaler
相關(guān)PDF資料
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SAB-C165-L25F 16-Bit Single-Chip Microcontroller
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAF-C165-LF3VHA 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述:
SAF-C165-LF-3V-HA 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述:
SAFC165LF3VHAXT 制造商:Infineon Technologies AG 功能描述:MCU 16-Bit C166 CISC/RISC ROMLess 3.3V 100-Pin TQFP
SAFC165LFHA 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述:
SAF-C165-LFHA 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述:
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