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參數(shù)資料
| 型號： | S83C196MD |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | EIAJ, SHRINK, QFP-80 |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 1306K |
| 代理商： | S83C196MD |
8XC196MD
Table 3 Interrupt Sources Vectors and Priorities
Interrupt Service
PTS Service
Interrupt Source
Symbol
Name
Vector
Priority
Name
Vector
Priority
CaptureCompare5
CAPCOMP5
INT12
2038H
12
PTS12
2058H
27
Compare4
COMP4
INT11
2036H
11
PTS11
2056H
26
CaptureCompare4
CAPCOMP4
INT10
2034H
10
PTS10
2054H
25
Interrupt and PTS Vectors
The 8XC196MD has three new interrupt and PTS
vectors which are CaptureCompare5 Compare 4
and CaptureCompare4 Table 3 shows these inter-
rupt vectors and priorities These are shown as re-
served vectors in the 8XC196MC User’s Manual
Frequency Generator
The Frequency Generator (FG) Peripheral which
was not available on the 8XC196MC device is avail-
able on the 8XC196MD device The FG outputs a
programmable-frequency 50% duty cycle waveform
on the FREQOUT pin (P77) There are two 8-bit reg-
isters which control the FG peripheral
Frequency Generator Control Register
(FG
CON) at 1FB8h
Frequency Generator Period Count Register
(FG
COUNT) at 1FBAh
The FG
CON can be read or written This register
is loaded with a value which determines the number
of counts necessary for toggling the output The fol-
lowing equation should be used to calculate the
FG
CON value
FG
CON value e
FXTAL
16
(FG Frequency)
b
1
where FG Frequency is from 4 kHz to 1 MHz
The FG
COUNT is loaded with the FG
CON reg-
ister value The FG
COUNT register is decrement-
ed every eighth state time When it reaches 00h the
FG
COUNT register will send a signal to toggle the
output pin and reload the FG
COUNT register with
the
value
in
the
FG
CON
register
The
FG
COUNT can only be read not written
The FREQOUT pin (P77) must be configured for a
special function to use it for the Frequency Genera-
tor feature
Port 7
Port 7 is an additional bidirectional port that was not
available on the 8XC196MC device Port 7 can be
used as IO or some of the pins have special func-
tions The pins are listed below followed by their
special functions
Table 4 Port 7 Special Function Pins
Pin
Special Function
P70
CAPCOMP4
P71
CAPCOMP5
P72
CAPCOMP4
P73
CAPCOMP5
P74
P75
P76
P77
FREQOUT
The special functions of the pins are selected in the
Port 7 SFRs The Port 2 IO Port section of the
8XC196MC User’s Manual can be referenced when
setting up the Port 7 SFRs Port 7 SFRs are located
in the following locations
Table 5 Port 7 Special Function Registers
SFR
Address
P7
MODE
1FD1h
P7
DIR
1FD3h
P7
REG
1FD5h
P7
PIN
1FD7h
5
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