UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 76

• 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

3.4.6 Register indirect addressing
76
[Function]
[Operand format]
[Description example]
[Illustration]
Register pair contents specified by a register pair specify code in an instruction word and by a register bank
select flag (RBS0 and RBS1) serve as an operand address for addressing the memory. This addressing can be
carried out for all the memory spaces.
MOV A, [DE]; when selecting [DE] as register pair
The contents of the memory
addressed are transferred.
DE
A
16
7
Identifier
−
D
[DE], [HL]
Operation code
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U17554EJ4V0UD
8
0
7
7
1
Description
Memory
0
E
0
0
0
1
0
0
0
1
The memory address
specified with the
register pair DE