DP8344BV National Semiconductor, DP8344BV Datasheet - Page 168
DP8344BV
Manufacturer Part Number
DP8344BV
Description
IC BIPHASE COMM PROCESSR 84-PLCC
Manufacturer
National Semiconductor
Datasheet
1.DP8344BV.pdf
(184 pages)
Specifications of DP8344BV
Processor Type
8-Bit RISC
Speed
20MHz
Voltage
4.5 ~ 5.5V
Mounting Type
Surface Mount
Package / Case
84-PLCC
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Mounting
Surface Mount
Operating Temperature (max)
70C
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Lead Free Status / Rohs Status
Not Compliant
Other names
*DP8344BV
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DP8344BV
Manufacturer:
NSC
Quantity:
5 510
Part Number:
DP8344BV
Manufacturer:
NS/国半
Quantity:
20 000
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6 0 Reference Section
IBR INTERRUPT BASE REGISTER
IV15 –8
The interrupt vector is obtained by concatenating
with the vector address
Alternate R1 read write
15
IV15
NMI
Receiver
Transmitter
Line Turn Around
Bi-directional
Timer
7
Interrupt
IV14
Interrupt Vector
trap vectors Further information Section 2 2 3
Interrupts
6
IBR
IV13
5
Interrupt Vector
IV12
Vector Address
4
8
0 1 1 1 0 0
0 0 0 1 0 0
0 0 1 0 0 0
0 0 1 1 0 0
0 1 0 0 0 0
0 1 0 1 0 0
0
IV11
3
High byte of interrupt and
0
(Continued)
5
IV10
2
vector address
IV9
1
Priority
1 high
2
3
4
5 low
IV8
IBR
0
0
168
ICR INTERRUPT CONTROL REGISTER
rsv
RIS1 0
IM4–0
Main R2 read write
RIS1
7
state is undefined at all times
RIS0
Receiver Interrupt Select
source of the Receiver Interrupt
Further information Section 3 2 3 Transceiver In-
terrupts
Interrupt Masks
masks an interrupt IM3 functions as an interrupt
mask only if BIRQ is defined as an input When
BIRQ is defined as an output IM3 controls the
state of BIRQ
Further information Section 2 2 3 Interrupts
6
X X X X 1 Receiver
X X X 1 X Transmitter
X X 1 X X Line Turn-Around
X 1 X X X Bi-Directional
1 X X X X Timer
0 0 0 0 0
‘‘
IM4– 0
RIS1 0 Interrupt Source
rsv
a
5
0 0
0 1
1 0
1 1
’’ indicates logical ‘‘or’’
IM4
RFF
DAV
(unused)
RA
4
No Mask
a
a
Interrupt
IM3
3
RE
RE
Each bit when set high
IM2
2
IM1
Defines the
1
IM0
0
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