UPD17073 NEC, UPD17073 Datasheet - Page 20

• Manufacturer Part Number: UPD17073
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
• Manufacturer: NEC

2. PROGRAM MEMORY (ROM)
2.1 General
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(1) Stores program
(2) Stores constant data
Figure 2-1 shows the configuration of the program memory.
As shown in this figure, the program memory consists of a program memory and a program counter.
The addresses of the program memory are specified by the program counter.
The program memory has the following two major functions:
Program counter
Figure 2-1. Outline of Program Memory
Specifies address
Program memory
Constant data
Instruction
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PD17072,17073