Z84C9008VSG Zilog, Z84C9008VSG Datasheet - Page 295

• Manufacturer Part Number: Z84C9008VSG
• Description: IC 8MHZ Z80 KIO 84-PLCC
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z84C9008VSG

• Processor Type: Z80
• Features: Serial/Parallel Input/Output, Counter/Timer Circuit
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 84-LCC (J-Lead)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Cpu Speed: 8MHz
• Digital Ic Case Style: LCC
• No. Of Pins: 84
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Rohs Compliant: Yes
• Base Number: 84
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Operation:
Op Code:
Description: The contents of register C are placed on the bottom half (A0 through A7) of
UM008005-0205
(HL) ← (C), B ← B -1, HL ← HL -1
IND
the address bus to select the I/O device at one of 256 possible ports.
Register B may be used as a byte counter, and its contents are placed on the
top half (A8 through A15) of the address bus at this time. Then one byte
from the selected port is placed on the data bus and written to the CPU. The
contents of the HL register pair are placed on the address bus and the input
byte is written to the corresponding location of memory. Finally, the byte
counter and register pair HL are decremented.
1
1
1
0
1
1
0
0
1
1
IND
1
0
0
1
1
0
ED
AA
Z80 Instruction Set
User’s Manual
Z80 CPU
275