Z84C0010PEG Zilog, Z84C0010PEG Datasheet - Page 283

• Manufacturer Part Number: Z84C0010PEG
• Description: IC 10MHZ Z80 CMOS CPU 40-DIP
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z84C0010PEG

• Processor Type: Z80
• Features: Enhanced Z80 Microprocessor/CPU
• Speed: 10MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Core Size: 8bit
• Cpu Speed: 10MHz
• Digital Ic Case Style: DIP
• No. Of Pins: 40
• Operating Temperature Range: -40°C To +100°C
• Svhc: No SVHC (18-Jun-2010)
• Operating Temperature Max: 100°C
• Rohs Compliant: Yes
• Processor Series: Z84C0xx
• Core: Z80
• Data Bus Width: 8 bit
• Program Memory Size: 64 KB
• Maximum Clock Frequency: 10 MHz
• 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: 10MHz
• Frequency Typ: 10MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3898; Z84C0010PEG

Operation:
Op Code:
Description: This instruction is used at the end of a maskable interrupt service routine to:
Condition Bits Affected: None
Example:
UM008005-0205
Return from Interrupt
RETI
•
•
Given: Two interrupting devices, with A and B connected in a daisy-chain
configuration and A having a higher priority than B.
+
1
INT
0
Restore the contents of the Program Counter (PC) (analogous to the
RET instruction)
Signal an I/O device that the interrupt routine is completed. The
instruction also facilitates the nesting of interrupts, allowing higher
priority devices to temporarily suspend service of lower priority
service routines. However, this instruction does not enable interrupts
that were disabled when the interrupt routine was entered. Before
doing the
should be executed to allow recognition of interrupts after completion
of the current service routine.
IEI
1
1
M Cycles
A
1
0
4
RETI
IEO
0
0
instruction, the enable interrupt instruction (
1
1
RETI
14 (4, 4, 3, 3)
1
1
T States
IEI
0
0
B
1
1
IEO
ED
4D
4 MHz E.T.
3.50
Z80 Instruction Set
User’s Manual
Z80 CPU
EI
)
RETI
263