80C32 Datasheet, PDF (40/62 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontrollers

Philips Semiconductors
CMOS single-chip 8-bit microcontrollers
Product specification
80C52/80C54/80C58
OSC
÷ 12
T2 PIN
C/T2 = 0
C/T2 = 1
TRANSITION
DETECTOR
CONTROL
TR2 _RELOAD
TL2
(8-BITS)
TH2
(8-BITS)
RCAP2L
RCAP2H
T2EX PIN
CONTROL
EXEN2
Figure 4. Timer 2 in Auto-Reload Mode (DCEN = 0)
(DOWN COUNTING RELOAD VALUE)
FFH
FFH
TF2
EXF2
TIMER 2
INTERRUPT
SU00067
TOGGLE
EXF2
OSC
÷12
C/T2 = 0
T2 PIN
C/T2 = 1
OVERFLOW
TL2
TH2
TF2
CONTROL
TR2
RCAP2L
RCAP2H
(UP COUNTING RELOAD VALUE)
Figure 5. Timer 2 Auto Reload Mode (DCEN = 1)
COUNT
DIRECTION
1 = UP
0 = DOWN
T2EX PIN
INTERRUPT
SU00730
1996 Aug 16
10