Instruction Set Summay
4-206
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
(
)
R/W
A7
A6
A5
A4
A3
A2
A1
A0
external
(bidirectional)
bit Ax = 0
⇒
PAx low
bit Ax = 1
⇒
PAx high
input states
0x04
8
Port A Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PAx as input
bit C = 1
⇒
PAx as output
0x08
8
Port B Data
(bidi
i
l)
R/W
B7
B6
B5
B4
B3
B2
B1
B0
external
i
(bidirectional)
bit Bx = 0
⇒
PBx low
bit Bx = 1
⇒
PBx high
input states
0x0C
8
Port B Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PBx as input
bit C = 1
⇒
PBx as output
0x10
8
Port C Data
(
)
R/W
C7
C6
C5
C4
C3
C2
C1
C0
external
(bidirectional)
bit Cx = 0
⇒
PCx low
bit Cx = 1
⇒
PCx high
input states
0x14
8
Port C Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PCx as input
bit C = 1
⇒
PCx as output
0x18
8
Port D Data
f
R/W
D7
D6
D5†
D4†
D3
D2
D1
D0
external
multifunction port
(bidirectional)
↓
falling edge
↑
rising edge
bit Dx = 0
⇒
PDx low
bit Dx = 1
⇒
PDx high
input states
(bidirectional)
†PD4 = inverting and PD5 = positive comparator inputs if CE=1 in IO 0x38
PD4
↑
triggers INT6
PD5
↓
triggers INT7
PD2
↑
triggers INT3
PD3
↓
triggers INT4
0x1C
8
Port D Control
f
R/W
C
C
C‡
C‡
C‡
C‡
C
C
0x00
multifunction control
‡C=0 for interrupts (IO 0x18)
bit C = 0
⇒
PDx as input
bit C = 1
⇒
PDx as output
0x20
8
Port E Data
(
)
R/W
E7
E6
E5
E4
E3
E2
E1
E0
external
(bidirectional)
bit Ex = 0
⇒
PEx low
bit Ex = 1
⇒
PEx high
input states
0x24
8
Port E Control
R/W
C
C
C
C
C
C
C
C
0x00
bit C = 0
⇒
PDx as input
bit C = 1
⇒
PDx as output
0x28
8
Port F Data
(
)
R
F7
F6
F5
F4
F3
F2
F1
F0
external
(input only)
Fx
↓
triggers INT5
bit Fx = 0
⇒
input PFx low
bit Fx = 1
⇒
input PFx high
input states
0x2C
16
Port G Data
(
)
R/W
G15
G14
G13
G12
G11
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1
G0
0x00
(output only)
bit Gx = 0
⇒
PGx low (output only)
bit Gx = 1
⇒
PGx high (output only)
all 0 outputs
0x2F
8
RTOTRIM
‡MSP C
l
R
T4
T3
T2
T1
T0
unaffected
‡MSP50C614 only
T4–T0 = Resistor trim bits
V = 1
⇒
T4–T0 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
Summary of Contents for MSP50C6xx
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