參數(shù)資料
型號： UPD75108FGF
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機
文件頁數(shù)： 34/78頁
文件大?。?/td> 549K
代理商： UPD75108FGF
34
μ
PD75108F,75112F,75116F
(3) Description of addressing area field symbols
*1
*2
Data memory
addressing
*3
*4
*5
*6
MB = MBE MBS (MBS = 0, 1, 15)
MB = 0
MBE = 0 : MB = 0 (00H to 7FH)
MB = 15 (80H to FFH)
MBE = 1 : MB = MBS (MBS = 0, 1, 15)
MB = 15, fmem = FB0H to FBFH,
FF0H to FFFH
MB = 15, pmem = FC0H to FFFH
μ
PD75108F : addr = 0000H to 1F7FH
μ
PD75112F : addr = 0000H to 2F7FH
μ
PD75116F : addr = 0000H to 3F7FH
addr = (Current PC) –15 to
(Current PC) + 16
μ
PD75108F : caddr = 0000H to 0FFFH (PC
12
= 0) or
= 1000H to 1F7FH (PC
12
= 1)
μ
PD75112F : caddr = 0000H to 0FFFH (PC
13
, PC
12
= 00B) or
= 1000H to 1FFFH (PC
13
, PC
12
= 01B) or
= 2000H to 2F7FH (PC
13
, PC
12
= 10B)
μ
PD75116F : caddr = 0000H to 0FFFH (PC
13
, PC
12
= 00B) or
= 1000H to 1FFFH (PC
13
, PC
12
= 01B) or
= 2000H to 2FFFH (PC
13
, PC
12
= 10B) or
= 3000H to 3F7FH (PC
13
, PC
12
= 11B)
faddr = 0000H to 07FFH
taddr = 0020H to 007FH
*7
*8
*9
*10
Program memory
addressing
Remarks
1.
2.
3.
4.
MB indicates the accessible memory bank.
For *2, MB = 0 without regard to MBE and MBS.
For *4 and *5, MB = 15 without regard to MBE and MBS.
*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 instructions)........................... S = 2
Note
One machine cycle is required to skip a GETI instruction.
One machine cycle is equivalent to one cycle (= t
CY
) of the CPU clock
Φ
. Three times can be selected by PCC setting.
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