tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 119

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA005
8.3.4 Port P4 (P47 to P40)
Peripheral
functions
Key-on
wakeup
AD
used as the analog input and the key-on wakeup input.
the port is used in the input mode.
Port P4 is an 8-bit input/output port that can be set to input or output for each bit individually, and it is also
Port P4 contains a programmable pull-up resistor on the VDD side. This pull-up resistor can be used when
Table 8-10 Port P4
AINi enable signal
ADCCR1<AINEN>
Secondary
function
SYSCR1<OUTEN>
KWIi enable signal
P4PRD read
SYSCR1<STOP>
Input/output control
KWI7
AIN7
P47
Function control
Pull-up control
(for each bit)
(for each bit)
(for each bit)
(for each bit)
Output latch
P4PU write
P4CR write
P4FC write
P4DR write
KWI6
AIN6
Reset signal
P46
KWIi
Figure 8-6 Port P4
KWI5
AIN5
P45
Page 105
KWI4
AIN4
P44
KWI3
AIN3
P43
KWI2
AIN2
AINi
P42
VDD
KWI1
AIN1
P41
Note1 : R = 100Ω (typ.)
Note2 : R
Note3 : i = 0 to 7
IN3
KWI0
AIN0
P40
= 50kΩ (typ.)
Programmable
pull-up resistor
R
R
VDD
IN3
TMP89FM42
P4i