mpc82x52a Megawin Technology, mpc82x52a Datasheet - Page 24
mpc82x52a
Manufacturer Part Number
mpc82x52a
Description
8-bit Micro-controller
Manufacturer
Megawin Technology
Datasheet
1.MPC82X52A.pdf
(72 pages)
- Current page: 24 of 72
- Download datasheet (2Mb)
Timer/Counter
24
MPC82x52A has two 16-bit timers, and they are named T0 and T1. Each of them can also
be used as a general event counter which counts the transition from 1 to 0.
Since the MPC82x52A is a RISC-like MCU which executes faster than traditional 80C51 MCU
from other providers. Based on consideration of compatibility with traditional 80C51 MCUs,
the frequency of the clock source for T0 and T1 is designed to be selectable between
oscillator frequency divided-by-12 (default) or oscillator frequency.
The user can configure T0/T1 to work under mode-0, mode-1, mode-2 and mode-3. It is
entirely identical to the traditional 80C51 MCU.
There are two SFR designed to configure timers T0 and T1. They are TMOD, and TCON.
The user also should take a glace of SFR AUXR which settle on the frequency of the clock
source driving the T0 and T1.
SFR: TMOD(Timer Mode Control Register)
GATE: = Gating control
C//T: = Timer or Counter function selector. 0: =timer, 1: =counter
{M1, M0}: mode select
GATE
Bit-7
0: = (default)
1: =
0: = (default)
1: =
{0, 0}: =
{0, 1}: =
{1, 0}: =
{1, 1}: =
Timer x is enabled whenever “TRx” control bit is set.
Timer/Counter x is enabled only while “/INTx” pin is high and “TRx” control bit is set.
Configure Tx as Timer use
Configure Tx as Counter use
Configure Tx as 13-bit timer/counter
Configure Tx as 16-bit timer/counter
Configure Tx as 8-bit timer/counter with automatic reload capability
for T0, set TL0 as 8-bit timer/counter, TH0 is locked into 8-bit timer
for T1, set Timer/Counter1 Stopped
Bit-6
C//T
(for timer1 use)
Bit-5
M1
MPC82x52A Data Sheet
Bit-4
M0
GATE
Bit-3
Bit-2
C//T
(for timer0 use)
Bit-1
M1
MEGAWIN
Bit-0
M0
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