Z84C9008VSG Zilog, Z84C9008VSG Datasheet - Page 39

• 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

UM008005-0205
Power-Down Acknowledge Cycle
RD or
HALT
CLK
NMI
HALT
CLK
M1
Figure 11. HALT Exit
When the clock input to the CMOS Z80 CPU is stopped at either a High or
Low level, the CMOS Z80 CPU stops its operation and maintains all
registers and control signals. However, ICC2 (standby supply current) is
guaranteed only when the system clock is stopped at a Low level during T4
of the machine cycle following the execution of the HALT instruction. The
timing diagram for the power-down function, when implemented with the
HALT instruction, is shown in Figure 12.
Figure 12. Power-Down Acknowledge
HALT Instruction is repeated during this Memory Cycle
M1
T
T
4
1
T
2
T
1
T
3
T
2
T
4
T
1
T
3
T
2
T
4
T
3
T
M1
1
T
4
User’s Manual
Z80 CPU
T
2
Overview
19