P89C738ABB View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'P89C738ABB' PDF : 64 Pages View PDF
Philips Semiconductors
8-bit Flash microcontrollers
Product specification
P89C738; P89C739
handbook, full pagewidth
OSC
12
C/T2 = 0
T2 PIN
C/T2 = 1
control
TR2
reload
transition
detector
T2EX PIN
control
EXEN2
TL2
(8 BITS)
TH2
(8 BITS)
RCAP2L RCAP2H
TF2
EXF2
Timer 2
interrupt
MLA609
Fig.12 Timer 2 in automatic reload mode.
handbook, full pagewidth
(note: oscillator frequency
is divided by 2 not by 12)
OSC
÷2
C/T2 = 0
T2 pin
C/T2 = 1
control
TR2
transition
detector
T2EX pin
control
EXEN2
timer 1
overflow
÷2
01
TL2
(8 BITS)
TH2
(8 BITS)
10
reload
SMOD
RCLK
÷16
RX clock
RCAP2L RCAP2H
EXF2
timer 2
interrupt
10
TCLK
÷16
TX clock
MGK192
1998 Apr 07
Fig.13 Timer 2 in baud rate generator mode.
23
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