upd17225 Renesas Electronics Corporation., upd17225 Datasheet - Page 6

• Manufacturer Part Number: upd17225
• Description: 4-bit Single-chip Microcontroller For Small General-purpose Infrared Remote Control Transmitter
• Manufacturer: Renesas Electronics Corporation.

1.
2.
3.
4.
5.
6.
7.
6
PIN FUNCTIONS ...........................................................................................................................
1.1
1.2
1.3
MEMORY SPACE .........................................................................................................................
2.1
2.2
2.3
2.4
2.5
PORTS ...........................................................................................................................................
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
CLOCK GENERATOR CIRCUIT ..................................................................................................
4.1
8-BIT TIMER AND REMOTE CONTROLLER CARRIER GENERATOR CIRCUIT .....................
5.1
5.2
5.3
BASIC INTERVAL TIMER/WATCHDOG TIMER ..........................................................................
6.1
6.2
6.3
INTERRUPT FUNCTIONS ............................................................................................................
7.1
7.2
7.3
Pin Function List ................................................................................................................................
Input/Output Circuits .........................................................................................................................
Processing of Unused Pins ..............................................................................................................
Program Counter (PC) .......................................................................................................................
Program Memory (ROM) ...................................................................................................................
Stack ...................................................................................................................................................
Data Memory (RAM) ...........................................................................................................................
Register File (RF) ...............................................................................................................................
Port 0A (P0A
Port 0B (P0B
Port 0C (P0C
Port 0D (P0D
Port 0E (P0E
INT Pin .................................................................................................................................................
Switching Bit I/O ................................................................................................................................
Specifying Pull-up Resistor Connection .........................................................................................
Instruction Execution Time (CPU Clock) Selection ........................................................................
Configuration of 8-bit Timer (with modulo function) .....................................................................
Function of 8-bit Timer (with modulo function) ..............................................................................
Carrier Generator Circuit for Remote Controller ............................................................................
Source Clock for Basic Interval Timer .............................................................................................
Controlling Basic Interval Timer ......................................................................................................
Operation Timing for Watchdog Timer ............................................................................................
Interrupt Sources ...............................................................................................................................
Hardware of Interrupt Control Circuit ..............................................................................................
Interrupt Sequence ............................................................................................................................
0
0
0
0
0
-P0E
-P0A
-P0B
-P0C
-P0D
3
3
3
3
3
) ...........................................................................................................................
) ...........................................................................................................................
) ...........................................................................................................................
) ...........................................................................................................................
) ...........................................................................................................................
Data Sheet U12643EJ2V0DS00
CONTENTS
PD17225, 17226, 17227, 17228
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