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P80C32 Datasheet(PDF) 15 Page - NXP Semiconductors

No. de pieza P80C32
Descripción Electrónicos  80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz
PDF  62 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P80C32 Datasheet(HTML) 15 Page - NXP Semiconductors

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Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2003 Jan 24
15
GATE
C/T
M1
M0
GATE
C/T
M1
M0
BIT
SYMBOL
FUNCTION
TMOD.3/
GATE
Gating control when set. Timer/Counter “n” is enabled only while “INTn” pin is high and
TMOD.7
“TRn” control pin is set. when cleared Timer “n” is enabled whenever “TRn” control bit is set.
TMOD.2/
C/T
Timer or Counter Selector cleared for Timer operation (input from internal system clock.)
TMOD.6
Set for Counter operation (input from “Tn” input pin).
M1
M0
OPERATING
0
0
8048 Timer: “TLn” serves as 5-bit prescaler.
0
1
16-bit Timer/Counter: “THn” and “TLn” are cascaded; there is no prescaler.
1
0
8-bit auto-reload Timer/Counter: “THn” holds a value which is to be reloaded
into “TLn” each time it overflows.
1
1
(Timer 0) TL0 is an 8-bit Timer/Counter controlled by the standard Timer 0 control bits.
TH0 is an 8-bit timer only controlled by Timer 1 control bits.
1
1
(Timer 1) Timer/Counter 1 stopped.
SU01580
TIMER 1
TIMER 0
Not Bit Addressable
TMOD
Address = 89H
Reset Value = 00H
76
543
2
1
0
Figure 1. Timer/Counter 0/1 Mode Control (TMOD) Register
INTn Pin
Timer n
Gate bit
TRn
TLn
(5 Bits)
THn
(8 Bits)
TFn
Interrupt
Control
C/T = 0
C/T = 1
SU01618
OSC
÷ d*
Tn Pin
*d = 6 in 6-clock mode; d = 12 in 12-clock mode.
Figure 2. Timer/Counter 0/1 Mode 0: 13-Bit Timer/Counter



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