參數(shù)資料
型號(hào)： UPD75106
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 36/70頁(yè)
文件大小： 535K
代理商： UPD75106
μ
PD75104, 75106, 75108
36
(4)
Machine cycle field
In this field, S indicates the number of machine cycles required when an instruction having a skip
function skips. The value of S varies as follows:
When no instruction is skipped ........................................................................
When 1-byte or 2-byte instruction is skipped.................................................
When 3-byte instruction (BR ! adder or CALL ! adder) is skipped ..............
S = 0
S = 1
S = 2
Note : The GETI instruction is skipped in one machine cycle.
One machine cycle equals to one cycle of the CPU clock
Φ
, (= t
CY
), and can be changed in three steps
depending on the setting of the processor clock control register (PCC).
(3)
Symbols in addressing area field
*1
MB = MBE . MBS
(MBS = 0, 1, 15)
MB = 0
MBE = 0 :MB = 0 (00H-7FH)
MB = 15 (80H-FFH)
MBE = 1 :MB = MBS (MBS = 0, 1, 15)
*2
*3
Data memory
addressing
*4
MB = 15, fmem =FB0H-FBFH,
FF0H-FFFH
*5
*6
MB = 15, pmem = FC0H-FFFH
μ
PD75104
addr = 0000H-0FFFH
μ
PD75106
addr = 0000H-177FH
μ
PD75108
addr = 0000H-1F7FH
addr = (Current PC) – 15 to (Current PC) – 1
(Current PC) + 2 to (Current PC) + 16
μ
PD75104
caddr = 0000H-0FFFH (PC
11
= 0)
μ
PD75106
caddr = 0000H-0FFFH (PC
12
= 0) or 1000H-177FH (PC
12
= 1)
μ
PD75108
caddr = 0000H-0FFFH (PC
12
= 0) or 1000H-1F7FH (PC
12
= 1)
faddr = 000H-7FFH
taddr = 020H-07FH
*7
Program memory
addressing
*8
*9
*10
Remarks
MB indicates memory bank that can be accessed.
In *2, MB = 0 regardless of MBE and MBS.
In *4 and *5, MB = 15 regardless of MBE and MBS.
*6 to *10 indicate areas that can be addressed.
相關(guān)PDF資料
PDF描述
UPD75106CW 4-BIT SINGLE-CHIP MICROCOMPUTER
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