參數(shù)資料
型號： S87C752-1N28
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
中文描述： 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP28
文件頁數(shù)： 12/24頁
文件大小： 225K
代理商： S87C752-1N28
Philips Semiconductors
Product specification
83C752/87C752
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8 bit A/D, I
2
C, PWM, low pin count
1998 May 01
12
COUNTER/TIMER
The 8XC752 counter/timer is designated Timer 0 and is separate
from Timer I of the I
2
C serial port and from the PWM. Its operation is
similar to mode 2 of the 80C51 counter/timer, extended to 16 bits.
When Timer 0 is used in the external counter mode, the T0 input
(P1.7) is sampled every S4P1. The counter/timer function is
controlled using the timer control register (TCON).
TCON Register
MSB
LSB
GATE
C/T
TF
TR
IE0
IT0
IE1
IT1
Position Symbol
TCON.7
Function
GATE
1 – Timer 0 is enabled only when INT0 pin is
high and TR is 1.
0 – Timer 0 is enabled only when TR is 1.
1 – Counter operation from T0 pin.
0 – Timer operation from internal clock.
1 – Set on overflow of T0.
0 – Cleared when processor vectors to interrupt
routine and by reset.
1 – Enable timer 0
0 – Disable timer 0
1 – Edge detected on INT0
1 – INT0 is edge triggered.
0 – INT0 is level sensitive.
1 – Edge detected on INT1
1 – INT1 is edge triggered.
0 – INT1 is level sensitive.
TCON.6
C/T
TCON.5
TF
TCON.4
TR
TCON.3
TCON.2
IE0
IT0
TCON.1
TCON.0
IE1
IT1
These flags are functionally identical to the corresponding 80C51
flags except that there is only one of the 80C51 style timers, and the
flags are combined into one register.
Note that the positions of the IE0/IT0 and IE1/IT1 bits are
transposed from the positions used in the standard 80C51 TCON
register.
A communications watchdog timer, Timer I, is described in the I
2
C
section. In I
2
C applications, this timer is dedicated to time generation
and bus monitoring for the I
2
C. In non-I
2
C applications, it is available
for use as a fixed time base.
The 16-bit timer/counter’s operation is similar to mode 2 operation
on the 80C51, but is extended to 16 bits. The timer/counter is
clocked by either 1/12 the oscillator frequency or by transitions on
the T0 pin. The C/T pin in special function register TCON selects
between these two modes. When the TCON TR bit is set, the
timer/counter is enabled. Register pair TH and TL are incremented
by the clock source. When the register pair overflows, the register
pair is reloaded with the values in registers RTH and RTL. The value
in the reload registers is left unchanged. The TF bit in special
function register TCON is set on counter overflow and, if the
interrupt is enabled, will generate an interrupt (see Figure 3).
OSC
÷
12
TL
TH
TF
RTL
RTH
T0 Pin
TR
Gate
INT0 Pin
Int.
C/T = 0
C/T = 1
Reload
SU00300
Figure 3. 83C752 Counter/Timer Block Diagram
Table 3. I
2
C Special Function Register Addresses
REGISTER ADDRESS
BIT ADDRESS
NAME
SYMBOL
ADDRESS
MSB LSB
I
2
C control
I
2
C data
I
2
C configuration
I
2
C status
I2CON
98
9F
9E
9D
9C
9B
9A
99
98
I2DAT
99
–
–
–
–
–
–
–
–
I2CFG
D8
DF
DE
DD
DC
DB
DA
D9
D8
I2STA
F8
FF
FE
FD
FC
FB
FA
F9
F8
相關(guān)PDF資料
PDF描述
S87C752-2N28 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
S87C752-4A28 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
S87C752-4DB CONN DUAL RECP WALLPLT 4POS FMAL
S87C752-4N28 Jack Socket; Plug Diameter:0.25; Contact Termination:Solder; Leaded Process Compatible:Yes; No. of Contacts:3; Peak Reflow Compatible (260 C):Yes RoHS Compliant: Yes
S83C752-1A28 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S87C752-2A28 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
S87C752-2N28 制造商: 功能描述: 制造商:undefined 功能描述:
S87C752-4A28 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
S87C752-4DB 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
S87C752-4N28 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count
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