Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 136

• 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

116
Operation:
Op Code:
Operands:
Description: The contents of the register pair qq are pushed to the external memory
Condition Bits Affected: None
Example:
UM008005-0205
Z80 CPU
User’s Manual
(SP-2) ← qqL, (SP-1) ← qqH
PUSH
qq
LIFO (last-in, first-out) Stack. The Stack Pointer (SP) register pair holds the
16-bit address of the current top of the Stack. This instruction first
decrements SP and loads the high order byte of register pair qq to the
memory address specified by the SP. The SP is decremented again and
loads the low order byte of qq to the memory location corresponding to this
new address in the SP. The operand qq identifies register pair BC, DE, HL,
or AF, assembled as follows in the object code:
If the AF register pair contains
1007H, at instruction
memory address
1005H
1
1
.
M Cycles
Pair
q
BC
DE
HL
AF
3
q
1005H
PUSH AF
0
PUSH qq
contains
1
11 (5, 3, 3)
T States
2233H
memory address
0
qq
00
01
10
11
33H
1
, and the Stack Pointer contains
and the Stack Pointer contains
4 MHz E.T.
1006H
2.75
Z80 Instruction Set
contains
22H
,