p80c52x2 NXP Semiconductors, p80c52x2 Datasheet - Page 16
p80c52x2
Manufacturer Part Number
p80c52x2
Description
80c51 8-bit Microcontroller Family 4k/8k/16k/32k Rom/otp 128b/256b Ram
Manufacturer
NXP Semiconductors
Datasheet
1.P80C52X2.pdf
(62 pages)
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Philips Semiconductors
2003 Jan 24
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)
*d = 6 in 6-clock mode; d = 12 in 12-clock mode.
TCON
Timer n
Gate bit
INTn Pin
BIT
TCON.7
TCON.6
TCON.5
TCON.4
TCON.3
TCON.2
TCON.1
TCON.0
OSC
Address = 88H
Bit Addressable
Tn Pin
SYMBOL
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
TRn
d*
TF1
FUNCTION
Timer 1 overflow flag. Set by hardware on Timer/Counter overflow.
Cleared by hardware when processor vectors to interrupt routine, or clearing the bit in software.
Timer 1 Run control bit. Set/cleared by software to turn Timer/Counter on/off.
Timer 0 overflow flag. Set by hardware on Timer/Counter overflow.
Cleared by hardware when processor vectors to interrupt routine, or by clearing the bit in software.
Timer 0 Run control bit. Set/cleared by software to turn Timer/Counter on/off.
Interrupt 1 Edge flag. Set by hardware when external interrupt edge detected.
Cleared when interrupt processed.
Interrupt 1 type control bit. Set/cleared by software to specify falling edge/low level triggered
external interrupts.
Interrupt 0 Edge flag. Set by hardware when external interrupt edge detected.
Cleared when interrupt processed.
Interrupt 0 Type control bit. Set/cleared by software to specify falling edge/low level
triggered external interrupts.
7
Figure 4. Timer/Counter 0/1 Mode 2: 8-Bit Auto-Reload
Figure 3. Timer/Counter 0/1 Control (TCON) Register
TR1
6
C/T = 0
C/T = 1
TF0
5
TR0
4
Control
16
IE1
3
IT1
2
(8 Bits)
(8 Bits)
TLn
THn
IE0
Reload
1
P80C3xX2; P80C5xX2;
IT0
0
Reset Value = 00H
TFn
SU01619
Interrupt
P87C5xX2
SU01516
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