UPD17232MC-XXX-5A4-E1 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD17232MC-XXX-5A4-E1

4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

NEC => Renesas Technology 

µPD17230, 17231, 17232, 17233, 17234, 17235, 17236

2. MEMORY SPACE

2.1 Program Counter (PC)

The program counter (PC) specifies an address of the program memory (ROM).

The program counter is an 11/12/13-bit binary counter and a 1-bit segment counter (SGR) as shown in Figure

2-1.

Its contents are initialized to address 0000H at reset.

Figure 2-1. Configuration of Program Counter

Page

MSB

LSB

SGR PC12 PC11 PC10 PC9

PC8

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

PC (µPD17230)

PC (µPD17231)

PC (µPD17232, 17233)

PC (µPD17234, 17235, 17236)

2.1.1 Segment register (SGR)

The segment register specifies a segment of the program memory.

Table 2-1 shows the relation between the segment register and program memory.

Table 2-1. Relation between Segment Register and Program Memory

Value of Segment Register

0

1

Segment of Program Memory

Segment 0

Segment 1

The segment register is set when the following instructions are executed:

• BR @AR

• CALL @AR

• SYSCAL entry

12

Data Sheet U14360EJ1V0DS00

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