參數(shù)資料
型號(hào)： SAF-C515A-LM
廠商： SIEMENS A G
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-Bit CMOS Microcontroller
中文描述： 8-BIT, 18 MHz, MICROCONTROLLER, PQFP80
文件頁(yè)數(shù)： 25/55頁(yè)
文件大?。?/td> 268K
代理商： SAF-C515A-LM
Semiconductor Group
25
1997-08-01
C515
Timer / Counter 0 and 1
Timer/Counter 0 and 1 can be used in four operating modes as listed in
table 4
:
In the “timer” function (C/T = ‘0’) the register is incremented every machine cycle. Therefore the
count rate is
f
OSC
/12.
In the “counter” function the register is incremented in response to a 1-to-0 transition at its
corresponding external input pin (P3.4/T0, P3.5/T1). Since it takes two machine cycles to detect a
falling edge the max. count rate is
f
OSC
/24. External inputs INT0 and INT1 (P3.2, P3.3) can be
programmed to function as a gate to facilitate pulse width measurements.
Figure 9
illustrates the
input clock logic.
Figure 9
Timer/Counter 0 and 1 Input Clock Logic
Table 4
Timer/Counter 0 and 1 Operating Modes
Mode
Description
TMOD
Input Clock
M1
M0
internal
f
OSC
/12x32
external (max)
f
OSC
/24x32
0
8-bit timer/counter with a
divide-by-32 prescaler
0
0
1
16-bit timer/counter
1
1
f
OSC
/12
f
OSC
/24
2
8-bit timer/counter with
8-bit autoreload
1
0
3
Timer/counter 0 used as one
8-bit timer/counter and one
8-bit timer
Timer 1 stops
1
1
12
f
OSC
/12
MCS01768
OSC
f
C/T
TMOD
0
Control
Timer 0/1
Input Clock
TCON
TR 0/1
Gate
TMOD
&
=1
1
P3.4/T0
P3.5/T1
max
P3.2/INT0
P3.3/INT1
OSC
/24
f
1
÷
_
相關(guān)PDF資料
PDF描述
SAF-C515C-LM 8-Bit CMOS Microcontroller
SAB-C515-1R24M 8-Bit CMOS Microcontroller
SAB-C515-1RM 8-Bit CMOS Microcontroller
SAB-C515-L24M 8-Bit CMOS Microcontroller
SAB-C515-LM 8-Bit CMOS Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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SAFC515C-8EM 制造商:Infineon Technologies AG 功能描述:IC 8BIT CPU SMD MQFP80 515
SAF-C515C-8EM CA 功能描述:8位微控制器 -MCU 8 BIT OTP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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