MSP430F643x
SLAS720B – AUGUST 2010 – REVISED AUGUST 2012
Table 3. Terminal Functions (continued)
TERMINAL
NAME
NO.
PZ
66
ZQW
G9
I/O
General-purpose digital I/O
USCI_B1 SPI slave out/master in; USCI_B1 I2C clock
LCD segment output S9
P8.7/S8
67
E12
I/O
General-purpose digital I/O
LCD segment output S8
General-purpose digital I/O
LCD segment output S7
General-purpose digital I/O
LCD segment output S6
P9.2/S5
70
D12
I/O
General-purpose digital I/O
LCD segment output S5
General-purpose digital I/O
LCD segment output S4
P9.4/S3
72
E9
I/O
General-purpose digital I/O
LCD segment output S3
P9.5/S2
73
C12
I/O
General-purpose digital I/O
LCD segment output S2
P9.6/S1
74
C11
I/O
General-purpose digital I/O
LCD segment output S1
General-purpose digital I/O
LCD segment output S0
PU ground supply
I/O
I/O
General-purpose digital I/O - controlled by PU control register
No connect.
General-purpose digital I/O - controlled by PU control register
LDO input
LDO output
No connect.
Analog ground supply
I/O
General-purpose digital I/O
Input terminal for crystal oscillator XT2
P7.3/XT2OUT
VBAK
VBAT
P5.7/RTCCLK
DVCC3
DVSS3
TEST/SBWTCK
85
86
87
88
89
90
91
B7
A7
D8
D7
A6
A5
B6
I
I/O
I/O
General-purpose digital I/O
Output terminal of crystal oscillator XT2
Capacitor for backup subsystem. Do not load this pin externally. For capacitor
values, see C
BAK
in
Backup or secondary supply voltage. If backup voltage is not supplied, connect to
DVCC externally.
General-purpose digital I/O
RTCCLK output
Digital power supply
Digital ground supply
Test mode pin; selects digital I/O on JTAG pins
Spy-bi-wire input clock
11
I/O
(1)
DESCRIPTION
P8.6/UCB1SOMI/UCB1SCL/S9
P9.0/S7
68
E11
I/O
P9.1/S6
69
F9
I/O
P9.3/S4
71
D11
I/O
P9.7/S0
75
D9
B11
and
B12
A12
B10
A11
A10
A9
B9
A8
B8
I/O
VSSU
PU.0
NC
PU.1
LDOI
LDOO
NC
AVSS3
P7.2/XT2IN
76
77
78
79
80
81
82
83
84
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