24
SLAS826F – MARCH 2015 – REVISED MARCH 2017
Product Folder Links:
Terminal Configuration and Functions
Copyright © 2015–2017, Texas Instruments Incorporated
Table 4-2. Signal Descriptions (continued)
FUNCTION
SIGNAL NAME
SIGNAL NO.
(1)
SIGNAL
TYPE
(2)
DESCRIPTION
PZ
ZXH
RGC
(3)
VCORE is for internal use only. No external current loading is possible. VCORE should only be connected to the recommended
capacitor value, C
VCORE
.
Port Mapper
(continued)
PM_UCB2CLK
37
G6
24
I/O
Default mapping: Clock signal input – eUSCI_B2 SPI
slave mode
Clock signal output – eUSCI_B2 SPI master mode
PM_UCB2SCL
39
H6
26
I
Default mapping: I
2
C clock – eUSCI_B2 I
2
C mode
PM_UCB2SDA
38
J5
25
I/O
Default mapping: I
2
C data – eUSCI_B2 I
2
C mode
PM_UCB2SIMO
38
J5
25
I/O
Default mapping: Slave in, master out – eUSCI_B2
SPI mode
PM_UCB2SOMI
39
H6
26
I/O
Default mapping: Slave out, master in – eUSCI_B2
SPI mode
PM_UCB2STE
36
H5
23
I/O
Default mapping: Slave transmit enable – eUSCI_B2
SPI mode
Power
AVCC1
45
F6
32
–
Analog power supply
AVCC2
87
D5
56
–
Analog power supply
AVSS1
43
F5
30
–
Analog ground supply
AVSS2
84
D6
53
–
Analog ground supply
AVSS3
40
E5
27
–
Analog ground supply
DVCC1
13
D2
10
–
Digital power supply
DVCC2
73
C6
48
–
Digital power supply
DVSS1
15
F2
12
–
Digital ground supply
DVSS2
72
E6
47
–
Digital ground supply
DVSS3
82
C7
51
–
Must be connected to ground
VCORE
(3)
12
C2
9
–
Regulated core power supply (internal use only, no
external current loading)
VSW
14
E2
11
–
DC-to-DC converter switching output
RTC
RTCCLK
59
G8
34
O
RTC_C clock calibration output
Reference
VREF+
70
D9
45
O
Internal shared reference voltage positive terminal
VREF-
71
C9
46
O
Internal shared reference voltage negative terminal
VeREF+
70
D9
45
I
Positive terminal of external reference voltage to ADC
VeREF-
71
C9
46
I
Negative terminal of external reference voltage to ADC
(recommended to connect to onboard ground)