37

µPD75312B, 75316B

(3) Description of addressing area field symbols

*1

*2

*3

*4

*5

*6

*7

*8

*9

*10

Data Memory

Addressing

MB = MBE • MBS (MBS = 0 to 3, 15)

MB = 0

MBE = 0 : MB = 0 (00H to 7FH)

MB = 15 (80H to FFH)

MBE = 1 : MB = MBS (MBS = 0 to 3, 15)

MB = 15, fmem = FB0H to FBFH,

FF0H to FFFH

MB = 15, pmem = FC0H to FFFH

addr = 0000H to 2F7FH

addr = 0000H to 3F7FH

addr = (Current PC) –15 to (Current PC) –1,

(Current PC) +2 to (Current PC) + 16

faddr = 0000H to 07FFH

taddr = 0020H to 007FH

Program Memory

Addressing

µPD75312B

µPD75316B

Remarks

1.

MB indicates the accessible memory bank.

2.

For *2, MB = 0 without regard to MBE and MBS.

3.

For *4 and *5, MB = 15 without regard to MBE and MBS.

4.

*6 to *10 indicate the addressable area.

(4) Explanation of machine cycle field

S shows the number of machine cycles required when skip is performed by an instruction with skip. The value

of S changes as follows:

• No skip ....................................................................................................................................................................... S = 0

• When instruction to be skipped is 1-byte or 2-byte instruction ......................................................................... S = 1

• When instruction to be skipped is 3-byte instruction (BR !addr, CALL !addr instruction) ............................. S = 2

Caution

One machine cycle is required to skip a GETI instruction.

Φ. Three times can be selected by PCC

setting.

µPD75312B

µPD75316B