Z84C9008VSG Zilog, Z84C9008VSG Datasheet - Page 284

• 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

264
UM008005-0205
Z80 CPU
User’s Manual
B generates an interrupt and is acknowledged. The interrupt
enable out, IEO, of B goes Low, blocking any lower priority
devices from interrupting while B is being serviced. Then A gen-
erates an interrupt, suspending service of B. The IEO of A goes
Low, indicating that a higher priority device is being serviced.
The A routine is completed and a
of A, allowing the B routine to continue. A second
on completion of the B routine and the IE0 of B is reset (high)
allowing lower priority devices interrupt access.
RETI
is issued resetting the IEO
Z80 Instruction Set
RETI
is issued