DS80C320-ECD DALLAS [Dallas Semiconductor], DS80C320-ECD Datasheet - Page 23
DS80C320-ECD
Manufacturer Part Number
DS80C320-ECD
Description
High-Speed Microcontroller User Guide
Manufacturer
DALLAS [Dallas Semiconductor]
Datasheet
1.DS80C320-ECD.pdf
(175 pages)
- Current page: 23 of 175
- Download datasheet (2Mb)
Timer Mode Control (TMOD)
SFR 89h
GATE
Bit 7
C/T
Bit 6
M1, M0
Bits 5-4
GATE
Bit 3
C/
Bit 2
M1, M0
Bits 1-0
T
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset
GATE
RW-0
7
Timer 1 Gate Control. This bit enable/disables the ability of Timer 1 to
increment.
0 = Timer 1 will clock when TR1=1, regardless of the state of
1 = Timer 1 will clock only when TR1=1 and
Timer 1 Counter/Timer Select.
0 = Timer 1 is incremented by internal clocks.
1 = Timer 1 is incremented by pulses on T1 when TR1 (TCON.6) is 1.
Timer 1 Mode Select. These bits select the operating mode of Timer 1.
M1
0
0
1
1
Timer 0 Gate Control. This bit enables/disables that ability of Timer 0 to
increment.
0 = Timer 0 will clock when TR0=1, regardless of the state of
1 = Timer 0 will clock only when TR0=1 and
Timer 0 Counter/Timer Select.
0 = Timer incremented by internal clocks.
1 = Timer 1 is incremented by pulses on T0 when TR0 (TCON.4) is 1.
Timer 0 Mode Select. These bits select the operating mode of Timer 0.
M1
0
0
1
1
When Timer 0 is in mode 3, TL0 is started/stopped by TR0 and TH0 is
started/stopped by TR1. Run control from Timer 1 is then provided via the
Timer 1 mode selection.
RW-0
C/
6
T
M0
0
1
0
1
RW-0
M1
5
1
Mode
Mode 0: 8 bits with 5-bit prescale
Mode 1: 16 bits
Mode 2: 8 bits with auto-reload
Mode 3: Timer 1 is halted, but holds its
M0
0
1
0
23 of 175
RW-0
M0
4
Mode
count
Mode 0: 8 bits with 5-bit prescale
Mode 1: 16 bits
Mode 2: 8 bits with auto-reload
Mode 3: Timer 0 is two 8 bit counters.
GATE
RW-0
3
INT1
INT0
High-Speed Microcontroller User’s Guide
RW-0
C/
=1.
=1.
2
T
RW-0
INT
INT0
M1
1
.
.
RW-0
M0
0
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