參數(shù)資料
型號： UPD78323
廠商： NEC Corp.
英文描述： 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述： 16/8-BIT單片機(jī)
文件頁數(shù)： 28/86頁
文件大?。?/td> 454K
代理商： UPD78323
28
μ
PD78323, 78324
Table 2-2. List of Special Function Registers (4/4)
FFF0H
FFF1H
FFF2H
FFF3H
FFF4H
FFF5H
FFF8H
FFF9H
G
G
G
G
G
G
G
G
G
G
G
G
––
––
G
G
G
G
G
G
G
G
––
G
G
G
G
G
G
Context switching enable register 0L
Context switching enable register 0H
Context switching enable register 1L
––
External interupt mode register 0
External interupt mode register 1
In-service priority register
Priority specify register
1 bit
8 bits
16 bits
Address
Special Function Register (SFR) Name
R/W
On Reset
Symbol
Manipulable Bit Unit
INTM0
INTM1
ISPR
PRSL
CSE0L
CSE0H
CSE1L
––
CSE0
CSE1
G
G
G
G
––
––
––
––
00H
––
00H
R/W
R
R/W
2.3
DATA MEMORY ADDRESSING
In the
μ
PD78324, the internal RAM space (FB00H to FEFFH) and the special function register area (FF00H to FFFFH)
are mapped in the FB00H to FFFFH area. In the FE20H to FF1FH space of the data memory, short direct addressing enables
direct addressing by 1-byte data in an instruction word.
Figure 2-6. Data Memory Addressing Space
Note
When EA = L, and with the
μ
PD78323, this is external memory.
Caution For word access (including stack operations) to the main RAM area (FE00H-FEFFH), the address that
specifies the operand must be an even value.
FFFFH
FF1FH
FF00H
FEFFH
FE80H
FE20H
FE00H
FDFFH
FB00H
7FFFH
0000H
Special Function Register
(SFR)
Main RAM
External Memory
General Register
Internal ROM
Note
SFR Addressing
Register Addressing
Short Direct Addressing
Direct Addressing
Register Indirect Addressing
Based Addressing
Paste Indexed Addressing
Paste Indexed Addressing
(Provided with Displacement)
Peripheral RAM
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