P89C660HFA PHILIPS [NXP Semiconductors], P89C660HFA Datasheet - Page 37
P89C660HFA
Manufacturer Part Number
P89C660HFA
Description
80C51 8-bit Flash microcontroller family
Manufacturer
PHILIPS [NXP Semiconductors]
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Philips Semiconductors
2002 Oct 28
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
* n = 6 in 6-clock mode, or 12 in 12-clock mode.
* n = 6 in 6-clock mode, or 12 in 12-clock mode.
T2EX PIN
OSC
T2 PIN
OSC
T2 PIN
n*
TRANSITION
DETECTOR
n*
C/T2 = 0
C/T2 = 1
C/T2 = 0
C/T2 = 1
EXEN2
Figure 23. Timer 2 in Auto-Reload Mode (DCEN = 0)
TR2
Figure 24. Timer 2 Auto Reload Mode (DCEN = 1)
CONTROL
CONTROL
TR2
(DOWN COUNTING RELOAD VALUE)
CONTROL
(UP COUNTING RELOAD VALUE)
RELOAD
RCAP2L
FFH
TL2
37
(8 BITS)
RCAP2L
RCAP2H
TL2
FFH
TH2
(8 BITS)
OVERFLOW
RCAP2H
P89C660/P89C662/P89C664/
TH2
T2EX PIN
EXF2
TF2
COUNT
DIRECTION
1 = UP
0 = DOWN
TOGGLE
TF2
P89C668
EXF2
INTERRUPT
INTERRUPT
SU01254
Product data
TIMER 2
SU01253
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