UPD784216AGC-XXX-8EU View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD784216AGC-XXX-8EU

16-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY

6.2.2 Control registers

(1) Program counter (PC)

The program counter is a 20-bit register whose contents are automatically updated when the program is

executed.

Figure 6-7. Format of Program Counter (PC)

19

0

PC

(2) Program status word (PSW)

This register holds the statuses of the CPU. Its contents are automatically updated when the program is

executed.

Figure 6-8. Format of Program Status Word (PSW)

15

14

13

12

11

10

9

8

PSWH

UF RBS2 RBS1 RBS0

–

–

–

–

PSW

7

PSWL

S

6

5

4

3

2

1

0

Z

RSSNote AC

IE

P/V

0

CY

Note This flag is provided to maintain compatibility with the 78K/III Series. Be sure to clear this flag to 0,

except when the software for the 78K/III Series is used.

(3) Stack pointer (SP)

This is a 24-bit pointer that holds the first address of the stack. Be sure to write 0 to the higher 4 bits of this

pointer.

Figure 6-9. Format of Stack Pointer (SP)

23

20

0

SP

0000

30

Data Sheet U14121EJ2V0DS00

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