UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 78

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

3.4.8 Based indexed addressing
78
[Operand format]
[Function]
[Description example]
[Illustration]
The B or C register contents specified in an instruction word are added to the contents of the base register, that
is, the HL register pair in the register bank specified by the register bank select flag (RBS0 and RBS1), and the
sum is used to address the memory. Addition is performed by expanding the B or C register contents as a
positive number to 16 bits. A carry from the 16th bit is ignored. This addressing can be carried out for all the
memory spaces.
In the case of MOV A, [HL + B]; (selecting B register)
The contents of the memory
addressed are transferred.
HL
Identifier
A
−
16
7
[HL + B], [HL + C]
Operation code
CHAPTER 3 CPU ARCHITECTURE
H
User’s Manual U17554EJ4V0UD
8
0
1
+
7
7
7
Description
0
1
0
1
Memory
L
B
0
1
1
0
0
0