upd17240 Renesas Electronics Corporation., upd17240 Datasheet - Page 44

• Manufacturer Part Number: upd17240
• Description: 4-bit Single-chip Microcontrollers For Small General-purpose Infrared Remote Control Transmitters
• Manufacturer: Renesas Electronics Corporation.

3.13 Selecting Standby Mode Release Condition and Whether Pull-Up or Pull-Down Resistor
specified in 1-bit units by using the following register file.
44
The standby mode release condition and whether a pull-up or pull-down resistor
Note
(1) When key matrix is used (P1AKEYn = 1)
Remark P1AKEY: Address 06H of register file
Is Connected (Port 1A)
3
0
Specify whether a resistor is connected or not by using P1ABPU (address 07H) of the register file.
P1ABPU: Address 07H of register file
n = 0 to 2
P1AHL2
2
P1AHL1
1
µ PD17240, 17241, 17242, 17243, 17244, 17245, 17246
P1AHL0
0
Data Sheet U15002EJ1V1DS
P1AHL0
P1AHL1
P1AHL2
RF: 05H
Address
0
1
0
1
0
1
Resistor is connected (P1ABPU0 = 1) Resistor is not connected (P1ABPU0 = 0)
Resistor is connected (P1ABPU1 = 1) Resistor is not connected (P1ABPU1 = 0)
Resistor is connected (P1ABPU2 = 1) Resistor is not connected (P1ABPU2 = 0)
Pull-up resistor
Standby mode is released when a low level is input to P1A.
Pull-down resistor
Standby mode is released when a high level is input to P1A.
Pull-up resistor
Standby mode is released when a low level is input to P1A.
Pull-down resistor
Standby mode is released when a high level is input to P1A.
Pull-up resistor
Standby mode is released when a low level is input to P1A.
Pull-down resistor
Standby mode is released when a high level is input to P1A.
Connects pull-down/pull-up resistor to P1A
Connects pull-down/pull-up resistor to P1A
Connects pull-down/pull-up resistor to P1A
After reset
0H
selects standby mode release condition
selects standby mode release condition
selects standby mode release condition
R/W
R/W
Note
No resistor
No resistor
No resistor
No resistor
No resistor
No resistor
is connected to P1A can be
0
1
2
and
and
and