Texas Instruments MSP50C614 - Manual (Page 296)

Instruction Set Summay
4-204 Assembly Language Instructions
MSP50C614
(MSP50P614) IO Port Description
Address
Bits
Name
R/W
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
After RESET
0x00
8
Port A Data
(bidi
i
l)
R/W
A7
A6
A5
A4
A3
A2
A1
A0
external
i
(bidirectional)
bit A
x
= 0
⇒
PA
x
low
bit A
x
= 1
⇒
PA
x
high
input states
0x04
8
Port A Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PA
x
as input
bit C = 1
⇒
PA
x
as output
0x08
8
Port B Data
(bidi
i
l)
R/W
B7
B6
B5
B4
B3
B2
B1
B0
external
i
(bidirectional)
bit B
x
= 0
⇒
PB
x
low
bit B
x
= 1
⇒
PB
x
high
input states
0x0C
8
Port B Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PB
x
as input
bit C = 1
⇒
PB
x
as output
0x10
8
Port C Data
(bidi
i
l)
R/W
C7
C6
C5
C4
C3
C2
C1
C0
external
i
(bidirectional)
bit C
x
= 0
⇒
PC
x
low
bit C
x
= 1
⇒
PC
x
high
input states
0x14
8
Port C Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PC
x
as input
bit C = 1
⇒
PC
x
as output
0x18
8
Port D Data li
f
i
R/W
D7
D6
D5
†
D4
†
D3
D2
D1
D0
external
i
multifunction port
(bidirectional)
↓ falling edge
↑ rising edge
bit D
x
= 0
⇒
PD
x
low
bit D
x
= 1
⇒
PD
x
high
input states
(bidirectional)
†
PD
4
= inverting and PD
5
= positive comparator inputs if CE=1 in IO 0x38
PD
4
↑ triggers INT6
PD
5
↓ triggers INT7
PD
2
↑ triggers INT3
PD
3
↓ triggers INT4
0x1C
8
Port D Control li
f
i
l
R/W
C
C
C
‡
C
‡
C
‡
C
‡
C
C
0x00
multifunction control
‡
C=0 for interrupts (IO 0x18)
bit C = 0
⇒
PD
x
as input
bit C = 1
⇒
PD
x
as output
0x20
8
Port E Data
(bidi
i
l)
R/W
E7
E6
E5
E4
E3
E2
E1
E0
external
i
(bidirectional)
bit E
x
= 0
⇒
PE
x
low
bit E
x
= 1
⇒
PE
x
high
input states
0x24
8
Port E Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PD
x
as input
bit C = 1
⇒
PD
x
as output
0x28
8
Port F Data (i
l
)
R
F7
F6
F5
F4
F3
F2
F1
F0
external
i
(input only)
F
x
↓ triggers INT5
bit F
x
= 0
⇒
input PF
x
low
bit F
x
= 1
⇒
input PF
x
high
input states
0x2C
16
Port G Data (l
)
R/W
G15
G14
G13
G12
G1
1
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1
G0
0x00
ll
(output only)
bit G
x
= 0
⇒
PG
x
low (output only)
bit G
x
= 1
⇒
PG
x
high (output only)
all 0 outputs
0x2F
A
8
R
T
OTRIM
‡
MSP
C
l
R
T
4
T
3
T
2
T
1
T
0
unaf
fected
‡
MSP50C614 only
T
4
–T
0
= Resistor trim bits
V = 1
⇒
T
4
–T
0
are valid
0x30
16
DAC Data
R/W
S
O
O
D
D
D
D
D
D
D
D
D
D
–
–
–
§
0x0000
S
O
O
D
D
D
D
D
D
D
D
D
–
–
–
–
¶
S
O
O
D
D
D
D
D
D
D
D
–
–
–
–
–
#
S = sign bit
O = overflow bit
D = data bit
– = dont care
§
10 bit DAC
¶
9 bit DAC
#
8 bit DAC
see P1,P0 in IO 0x34