tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 509

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

Key-on Wakeup Circuit
20.6 Setting example
Cautions on Use of Key Inputs with Pull-up Enabled
A) When you make the first setting after turning the power ON (Example: port E0 with interrupts at
B) To change the active state of a key input during operation
C) To enable a key input during operation
both edges)
1)
2)
3)
4)
5)
6)
7)
1)
2)
3)
to be changed. (Example: Lo level interrupt)
4)
5)
6)
1)
2)
3)
4)
5)
6)
7)
Make a setting of the port.
PECR<PE0C> = “0”
PEFC1<PE0F> = “1”
PEPUP<PEE0> = “1”
PEIE<PIEE0> = “1”
Set KWUPST08<KEY08EN> to “0” for the key input to be used.
Set KWUPST08<KEY082:KEY080> to “100” to define the active state of the key input to be
used.
Set KWUPST08<KEY08EN> to “1” for the key input to be used.
Wait until the pull-up operation is completed.
Set KWUPCLR to “1010” to clear interrupt requests.
Program the CG and the INTC by setting IMCGD3<EMCGC2:0> to “001” and
IMCGD3<KWUPEN> to “1.”
(Refer to Chapter 6, “Interrupt Settings” for the details of setting methods.)
Disable key interrupts by setting IMC04<IL122:120> to “000” at the INTC.
Set KWUPST08<KEY08EN> to “0” for the key input to be used.
Change the active state by setting KWUPST08<KEY082:KEY080> to “000” for the key input
Set KWUPST08<KEY08EN> to “1” for the key input to be used.
Clear interrupt requests by setting KWUPCLR to “1010.”
Enable the key interrupt at the INTC. Set IMC04<IL122:120> to a desired level “xxx.”
Disable key interrupts by setting IMC04<IL122:120> to “000” at the INTC.
Set KWUPST08＜KEY08EN＞ to “0” for the key input to be used.
Define the active state of the key input to be used at the corresponding KWUPST08.
Set KWUPST08＜KEY08EN＞ to “1” for the key input to be used.
Wait until the pull-up operation is completed.
Clear interrupt requests by setting KWUPCLR.
Enable key interrupts at the INTC. (Set IMC04<IL122:120> to a desired level.)
TMP19A44(rev1.3)20-9
The setting for input pin.
The function is set to the key.
Pull-up ON control
Input enabled
TMP19A44
2010-04-01