D75208CW NEC, D75208CW Datasheet - Page 28

no-image

D75208CW

Manufacturer Part Number
D75208CW
Description
Search -----> UPD75208
Manufacturer
NEC
Datasheet
www.DataSheet4U.com
28
(3)
(4)
The S value varies as follows:
to PCC setting.
Description of symbols in the addressing area column
Remarks
Description of the machine cycle column
S indicates the number of machine cycles required for skip operation by an instruction having skip function.
Note
One machine cycle is equal to one cycle(=t
* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
*10
• When not skipped ................................................................................................... S = 0
• When 1-byte or 2-byte instructions are skipped ................................................. S = 1
• When 3-byte instructions are skipped (BR !addr, CALL !addr instruction) ..... S = 2
GETI instruction is skipped in one machine cycle.
MB = MBE • MBS
(MBS = 0, 1, 15)
MB = 0
MBE = 0 : MB = 0 (00H to 7FH)
MBE = 1 : MB = MBS (MBS = 0, 1, 15)
MB = 15, fmem = FB0H to FBFH,
MB = 15, pmem = FC0H to FFFH
addr = 0000H to 1F7FH
addr = (Current PC) – 15 to (Current PC) – 1,
caddr = 0000H to 0FFFH
faddr = 0000H to 07FFH
taddr = 0020H to 007FH
1. MB indicates accessible memory bank.
2. In *2, MB = 0 irrespective of MBE and MBS.
3. In *4 and *5, MB = 15 irrespective of MBE and MBS.
4. *6 to *10 indicate addressable areas.
(Current PC) + 2 to (Current PC) + 16
1000H to 1F7FH
MB = 15 (80H to FFH)
FF0H to FFFH
(PC
(PC
12
12
= 0) or
= 1)
CY
) of CPU clock
and three time periods are available according
Program Memory
Data Memory
Addressing
Addressing
PD75208

Related parts for D75208CW