tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 112

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3.5.14
Port F (PF0-PF6)
output. The control register PFCR is used to set the port for input or output. A reset clears PFCR to 0,
putting port F in input mode. In addition to functioning as an input/output port, the pins of this port can
also function as various input/output pins: PF0 functions as SIO data output, PF1 as SIO data input or key
input, PF2 as SIO CLK input/output or CTS* input, PF3, PF4 and PF5 as SBI input/output, and PF6 as
external interrupt input. These functions are enabled by setting the corresponding bits of PFFC to 1.
register (PFODE) can be used to set PF0, PF2, PF4 and PF5 to open-drain output when they are used for
output. Port F becomes a 5 V input/output port when 5 V is supplied to its dedicated power supply pin
DVCC51. It becomes a VCC-based (3 V) port when VCC is supplied to DVCC51.
Port F is a 7-bit general-purpose input/output port whose bits can each be set independently for input or
A reset clears PFCR and PFFC to 0, placing port F in input mode. The output open-drain control
TXD5
Direction Control
Function Control
Write to PFCR
Write to PFFC
Output Latch
Write to PF
Read PF
(bitwise)
(bitwise)
Reset
S
Figure 3.5.42 Port F (PF0)
TMP1942CY/CZ-111
A
B
Selector
Selector
S
S
B
A
Open-drain Setting
Possible
TMP1942CY/CZ
STOP
DRIVE
PF0 (TXD5)