UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 46
UPD78F9222MC(T)-5A4-A
Manufacturer Part Number
UPD78F9222MC(T)-5A4-A
Description
8BIT MCU, 4K FLASH, 256B RAM, 78F9222
Manufacturer
NEC
Datasheet
1.UPD78F9222MCT-5A4-A.pdf
(414 pages)
Specifications of UPD78F9222MC(T)-5A4-A
Controller Family/series
UPD78
No. Of I/o's
17
Ram Memory Size
256Byte
Cpu Speed
10MHz
No. Of Timers
4
No. Of
RoHS Compliant
Core Size
8bit
Program Memory Size
4KB
Oscillator Type
External, Internal
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Quantity:
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Part Number:
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3.4.4 Register addressing
46
[Function]
[Operand format]
[Description example]
A general-purpose register is accessed as an operand.
The general-purpose register to be accessed is specified with the register specify code and functional name in
the instruction code.
Register addressing is carried out when an instruction with the following operand format is executed. When an
8-bit register is specified, one of the eight registers is specified with 3 bits in the instruction code.
‘r’ and ‘rp’ can be described with absolute names (R0 to R7 and RP0 to RP3) as well as function names (X, A, C,
B, E, D, L, H, AX, BC, DE, and HL).
MOV A, C; When selecting the C register for r
INCW DE; When selecting the DE register pair for rp
Identifier
rp
r
Instruction code
Instruction code
X, A, C, B, E, D, L, H
AX, BC, DE, HL
0
0
1
CHAPTER 3 CPU ARCHITECTURE
0
0
0
User’s Manual U16898EJ5V0UD
0
1
0
Description
0
0
0
1
0
1
0
1
0
1
0
0
0
1
0
Register specify code
Register specify code
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