参数资料
型号: ST7PL38F2MC/XXXE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-20
文件页数: 118/168页
文件大小: 2955K
代理商: ST7PL38F2MC/XXXE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7L34, ST7L35, ST7L38, ST7L39
53/168
ON-CHIP PERIPHERALS (cont’d)
11.2 DUAL 12-BIT AUTORELOAD TIMER 3 (AT3)
11.2.1 Introduction
The 12-bit Autoreload Timer can be used for gen-
eral-purpose timing functions. It is based on one or
two free-running 12-bit upcounters with an input
capture register and four PWM output channels.
There are six external pins:
– 4 PWM outputs
– ATIC/LTIC pin for the Input Capture function
– BREAK pin for forcing a break condition on the
PWM outputs
11.2.2 Main Features
Single Timer or Dual Timer mode with two 12-bit
upcounters (CNTR1/CNTR2) and two 12-bit
autoreload registers (ATR1/ATR2)
Maskable overflow interrupts
PWM mode
– Generation of four independent PWMx signals
– Dead time generation for half-bridge driving
mode with programmable dead time
– Frequency 2 kHz to 4 MHz (@ 8 MHz fCPU)
– Programmable duty-cycles
– Polarity control
– Programmable output modes
Output Compare Mode
Input Capture Mode
– 12-bit input capture register (ATICR)
– Triggered by rising and falling edges
– Maskable IC interrupt
– Long range input capture
Break control
Flexible Clock control
Figure 34. Single Timer Mode (ENCNTR2 = 0)
ATIC
PWM0
PWM1
PWM2
PWM3
PWM3 Duty Cycle Generator
12-bit Input Capture
PWM2 Duty Cycle Generator
PWM1 Duty Cycle Generator
PWM0 Duty Cycle Generator
12-bit Autoreload Register 1
12-bit Upcounter 1
Clock
Control
1ms
f CPU
Edge Detection Circuit
Output Compare
CMP
Interrupt
fr
o
m
Li
te
Ti
mer
OVF1 Interrupt
OE0
OE1
OE2
OE3
Dead Time
Generator
DTE bit
BPEN bit
Br
e
ak
F
unc
tio
n
1
相关PDF资料
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ST7PL38F2UCXXXRE 8-BIT, MROM, 8 MHz, MICROCONTROLLER, QCC20
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