tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 108

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

3.5.13
Port E (PE0-PE7)
or output. The control register PECR is used to set the port for input or output. A reset clears PECR to 0,
putting port E 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: PE0 and PE3 function as SIO data output, PE1 and PE4 as SIO
data input, PE2 and PE5 as SIO CLK input/output or CTS* input, and PE6 and PE7 as external interrupt
input. These functions are enabled by setting the corresponding bits of PEFC to 1.
register (PEODE) can be used to set PE0, PE2, PE3 and PE5 to open-drain output when they are used for
output.
Port E is an 8-bit general-purpose input/output port whose bits can each be set independently for input
A reset clears PECR and PEFC to 0, placing port E in input mode. The output open-drain control
TXD3/4
Direction Control
Function Control
Write to PECR
Write to PEFC
Output Latch
Write to PE
Read PE
(bitwise)
(bitwise)
Reset
S
Figure 3.5.38 Port E (PE0, PE1)
TMP1942CY/CZ-107
A
B
Selector
Selector
S
S
B
A
Open-drain Setting
Possible
TMP1942CY/CZ
STOP
DRIVE
PE0 (TXD3)
PE1 (TXD4)