ST6208C/ST6209C/ST6210C/ST6220C
8.2 8-BIT TIMER
8.2.1 Introduction
8.2.2 Main Features
■ Time-out downcounting mode with up to 15-bit
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 2 . The peripheral may be config-
ured in three different operating modes.
accuracy
■ External counter clock source (valid also in
15
STOP mode)
■ Interrupt capability on counter underflow
■ Output signal generation
■ External pulse length measurement
■ Event counter
The timer can be used in WAIT and STOP modes
to wake up the MCU.
Figure 27. Timer Block Diagram
TIMER
PIN
7
0
8-BIT DOWN COUNTER
f
f
INT/12
COUNTER
TCR
REGISTER
TCR7 TCR6 TCR5 TCR4 TCR3 TCR2 TCR1 TCR0
f
EXT
LATCH
7
0
TSCR
REGISTER
TMZ
ETI
TOUT DOUT
PSI
PS2
PS1
PS0
INTERRUPT
f
PRESCALER
PSCR REGISTER
PSCR7 PSCR6 PSCR5 PSCR4 PSCR3 PSCR2 PSCR1 PSCR0
7
0
/1
/128
/64
/32
/16
/8
/4
/2
PROGRAMMABLE PRESCALER
46/104
1
STMICROELECTRONICS [ ST ]
