TMPM330 - Keil

7.1.2 Port B (PB0~PB7)
Under development
TMPM330
The port B is a general-purpose, 8-bit input/output port. For this port, inputs and outputs can be
specified in units of bits. Besides the general-purpose input/output function, the port B performs debug
communication function.
A reset allows PB0, PB1 and PB2 to perform the debug communication function and the other bits
perform as the general-purpose port with input/output disabled. When PB0 functions as the TDO or
SWV port, output is enabled. When PB1 functions as the TDI port, input and pull-up are enabled. When
PB2 functions as the TRST port, input and pull-up are enabled.
Port B register
7 6 5 4 3 2 1 0
PB Bit Symbol PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0
(0x4000_0040) Read/Write R/W
After reset “0”
Port B control register
7 6 5 4 3 2 1 0
PBCR Bit Symbol PB7C PB6C PB5C PB4C PB3C PB2C PB1C PB0C
(0x4000_0044) Read/Write R/W
After reset 0 0 0 0 0 0 0 1
Function 0: Output disabled 1: Output enabled
Port B function register 1
7 6 5 4 3 2 1 0
PBFR1 Bit Symbol - - - - - PB2F1 PB1F1 PB0F1
(0x4000_0048) Read/Write R R/W
After reset 0 1 1 1
Function “0” is read. 0:PORT 0:PORT 0:PORT
1: TRST 1: TDI 1:
TDO/SWV
Port B pull-up control register
7 6 5 4 3 2 1 0
PBPUP Bit Symbol PB7UP PB6UP PB5UP PB4UP PB3UP PB2UP PB1UP PB0UP
(0x4000_006C) Read/Write R/W
After reset 0 0 0 0 0 1 1 0
Function Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up Pull-up
0:off 0:off 0:off 0:off 0:off 0:off 0:off 0:off
1:on 1:on 1:on 1:on 1:on 1:on 1:on 1:on
Port B input enable control register
7 6 5 4 3 2 1 0
PBIE Bit Symbol PB7IE PB6IE PB5IE PB4IE PB3IE PB2IE PB1IE PB0IE
(0x4000_0078) Read/Write R/W
After reset 0 0 0 0 0 1 1 0
Function Input Input Input Input Input Input Input Input
0:disabled 0:disabled 0:disabled 0:disabled 0:disabled 0:disabled 0:disabled 0:disabled
1:enabled 1:enabled 1:enabled 1:enabled 1:enabled 1:enabled 1:enabled 1:enabled
TMPM330(rev0.4) 7-4
Input/Output Ports