Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 275
![IC 8MHZ Z80 CMOS PIO 40-DIP](/photos/6/57/65796/269-40-dip_sml.jpg)
Z84C2008PEG
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z84C2008PEG
Manufacturer:
Zilog
Quantity:
20
- Current page: 275 of 308
- Download datasheet (2Mb)
Operation:
Op Code:
Operands:
Description: The current contents of the Program Counter (PC) are pushed onto the top
Condition Bits Affected: None
UM008005-0205
Call And Return Group
(SP-1) ← PCH, (SP-2) ← PCL, PC ← nn
CALL
nn
The first of the two n operands in the assembled object code above is the
least-significant byte of a 2-byte memory address.
of the external memory stack. The operands
point to the address in memory where the first Op Code of a subroutine is to
be fetched. At the end of the subroutine, a RETurn instruction can be used
to return to the original program flow by popping the top of the stack back
to the PC. The push is accomplished by first decrementing the current
contents of the Stack Pointer (register pair SP), loading the high-order byte
of the PC contents to the memory address now pointed to by the SP; then
decrementing SP again, and loading the low order byte of the PC contents
to the top of stack.
Because this is a 3-byte instruction, the Program Counter was incremented
by three before the push is executed.
1
1
M Cycles
0
5
0
n
n
1
CALL nn
17 (4, 3, 4, 3, 3)
1
T States
0
1
CD
nn
4 MHz E.T.
are then loaded to the PC to
4.25
Z80 Instruction Set
User’s Manual
Z80 CPU
255
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