Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 72

• Manufacturer Part Number: Z84C2008PEG
• Description: IC 8MHZ Z80 CMOS PIO 40-DIP
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z84C2008PEG

• Processor Type: Z80
• Features: Low Power CMOS
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Cpu Speed: 8MHz
• Digital Ic Case Style: DIP
• No. Of Pins: 40
• Supply Voltage Range: 5V
• Operating Temperature Range: -40°C To +100°C
• Svhc: No SVHC (18-Jun-2010)
• Rohs Compliant: Yes
• Processor Series: Z84C2xx
• Core: Z80
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Operating Supply Voltage: 0 V to 5 V
• Maximum Operating Temperature: + 100 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Base Number: 84
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

52
UM008005-0205
Z80 CPU
User’s Manual
All load instructions using indexed addressing for either the source or
destination location actually use three bytes of memory with the third byte
being the displacement d. For example, a load register E with the operand
pointed to by IX with an offset of +8 is written:
LID E, (IX + 8)
The instruction sequence for this in memory is:
The two extended addressing instructions are also three byte instructions.
For example, the instruction to load the accumulator with the operand in
memory location 6F32H is written:
LID A, (6F 32H)
and its instruction sequence is:
Notice that the low order portion of the address is always the first
operand.
The load immediate instructions for the general-purpose 8-bit registers
are two-byte instructions. The instruction load register H with the value
36H is written:
LD H, 36H
and its sequence is:
Address A
Address A
Address A
A+1
A+2
A+1
A+2
A+1
3A
32
DD
6F
5E
08
26
36
Op Code
Operand
Op Code
Low Order Address
High Order Address
Op Code
Displacement
Operand
Z80 CPU Instruction Description