参数资料
型号: ST62P15CM3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: MICROCONTROLLER, PDSO28
封装: PLASTIC, SOP-28
文件页数: 48/105页
文件大小: 1412K
代理商: ST62P15CM3
ST6215C/ST6225C
47/105
9.2 8-BIT TIMER
9.2.1 Introduction
The 8-Bit Timer on-chip peripheral is a free run-
ning downcounter based on an 8-bit downcounter
with a 7-bit programmable prescaler, giving a max-
imum count of 215. The peripheral may be config-
ured in three different operating modes.
9.2.2 Main Features
s
Time-out downcounting mode with up to 15-bit
accuracy
s
External counter clock source (valid also in
STOP mode)
s
Interrupt capability on counter underflow
s
Output signal generation
s
External pulse length measurement
s
Event counter
The timer can be used in WAIT and STOP modes
to wake up the MCU.
Figure 27. Timer Block Diagram
INTERRUPT
TMZ
ETI
TOUT
DOUT
PSI
PS2
PS1
PS0
TSCR
PROGRAMMABLE PRESCALER
PSCR6 PSCR5 PSCR4 PSCR3 PSCR2 PSCR1 PSCR0
PSCR REGISTER
0
70
TCR7
TCR6
TCR5
TCR4
TCR3
TCR2
TCR1
TCR0
TCR
70
RE
L
O
A
D
8-BIT DOWN COUNTER
TIMER
fPRESCALER
fCOUNTER
fEXT
fINT/12
LATCH
PIN
PSCR7
7
/2
/1
/4
/8
/16
/32
/64
/128
REGISTER
1
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