tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 193

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Input/Output Ports
7.12 Port B (PB0 to PB7)
Port B is a general-purpose, 8-bit input/output port. For this port, inputs and outputs can be specified in units of
bits by using the control register PBCR and the function registers PBFC1 and PBFC2. A reset allows all bits of
the output latch PB to be set to "1," all bits of PBCR, PBFC1 and PBFC2 to be cleared to "0," and the port B to
be put in input mode.
Input is disabled right after reset. To enable input, set the corresponding bit of PBIE to “1”.
Besides the input/output port function, the port B performs other functions: PB2, PB3 and PB7 output 16-bit
timer, PB4 outputs HSIO data, PB5 inputs HSIO data, PB6 inputs and outputs HSIO HCLK or input HCTS, and
PB0 and PB1 perform a two-phase pulse input counter function with a dial input function.
PB read
(function control)
(output control)
(output control)
(input control)
(output latch)
PBPUP
PBFC1
PBCR
PBIE
PB
Drive disabled during
STOP/ RESET
Fig. 7.30 Port B (PB0, PB1)
TMP19A44 (rev1.3) 7-45
0
1
PORT KEEP
PHC3IN0,
PHC3IN1
TMP19A44
2010-04-01
Port B
PB0, PB1
(PHC3IN0,PHC3IN
1)
RESET