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| 型號(hào)： | μPD750064 |
| 廠商： | NEC Corp. |
| 英文描述： | 4 Bit Single Chip Microcontrollers(4位單片微控制器) |
| 中文描述： | 4位單片微控制器（4位單片微控制器） |
| 文件頁(yè)數(shù)： | 44/82頁(yè) |
| 文件大小： | 376K |
| 代理商： | ΜPD750064 |
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44
m
PD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)
(3) Explanation of symbols under addressing area column
*1
MB = MBEMBS (MBS = 0, 1, 15)
*2
MB = 0
*3
MBE = 0 : MB = 0 (000H-07FH)
MB = 15 (F80H-FFFH)
MBE = 1 : MB = MBS (MBS = 0, 1, 15)
Data memory addressing
*4
MB = 15, fmem = FB0H-FBFH, FF0H-FFFH
*5
MB = 15, pmem = FC0H-FFFH
*6
addr = 0000H-0FFFH (
m
PD750064)
0000H-17FFH (
m
PD750066)
0000H-1FFFH (
m
PD750068)
*7
addr, addr1 = (Current PC) – 15 to (Current PC) – 1
(Current PC) + 2 to (Current PC) + 16
*8
caddr = 0000H-0FFFH (
m
PD750064)
0000H-0FFFH (PC
12
= 0:
m
PD750066, 750068)
1000H-17FFH (PC
12
= 1:
m
PD750066)
1000H-1FFFH (PC
12
= 1:
m
PD750068)
Program memory addressing
*9
faddr = 0000H-07FFH
*10
taddr = 0020H-007FH
*11
Mk II mode only
addr1 = 0000H-0FFFH (
m
PD750064)
0000H-17FFH (
m
PD750066)
0000H-1FFFH (
m
PD750068)
Remarks 1.
MB indicates memory bank that can be accessed.
In *2, MB = 0 independently of how MBE and MBS are set.
In *4 and *5, MB = 15 independently of how MBE and MBS are set.
*6 to *11 indicate the areas that can be addressed.
2.
3.
4.
(4) Explanation of number of machine cycles column
S denotes the number of machine cycles required by skip operation when a skip instruction is executed.
The value of S varies as follows.
When no skip is made: S = 0
When the skipped instruction is a 1- or 2-byte instruction: S = 1
When the skipped instruction is a 3-byte instruction
Note
: S = 2
Note
3-byte instruction: BR !addr, BRA !addr1, CALL !addr or CALLA !addr1 instruction
Caution The GETI instruction is skipped in one machine cycle.
One machine cycle is equal to one cycle (= t
CY
) of CPU clock
F
; time can be selected from among four
types by setting PCC.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| μPD750064(A) | 4 Bit Single Chip Microcontrollers(4位單片微控制器) |
| μPD750066 | 4 Bit Single Chip Microcontrollers(4位單片微控制器) |
| μPD750066(A) | 4 Bit Single Chip Microcontrollers(4位單片微控制器) |
| μPD750068 | 4 Bit Single Chip Microcontrollers(4位單片微控制器) |
| μPD750068(A) | 4 Bit Single Chip Microcontrollers(4位單片微控制器) |
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