Z84C0010PEG Zilog, Z84C0010PEG Datasheet - Page 65
Z84C0010PEG
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
Z84C0010PEG
Available stocks
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Quantity
Price
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UM008005-0205
Modified Page Zero Addressing
The Z80 has a special single byte
locations in page zero of memory. This instruction, which is referred to as
a restart, sets the PC to an effective address in page zero. The value of this
instruction is that it allows a single byte to specify a complete 16-bit
address where commonly called subroutines are located, thus saving
memory space.
Relative Addressing
Relative addressing uses one byte of data following the Op Code to
specify a displacement from the existing program to which a program
jump can occur. This displacement is a signed two’s complement number
that is added to the address of the Op Code of the following instruction.
The value of relative addressing is that it allows jumps to nearby locations
while only requiring two bytes of memory space. For most programs,
relative jumps are by far the most prevalent type of jump due to the
proximity of related program segments. Thus, these instructions can
Significantly reduce memory space requirements. The signed
displacement can range between +127 and -128 from A+2. This allows
for a total displacement of +129 to -126 from the jump relative Op Code
address. Another major advantage is that it allows for relocatable code.
B7
Op Code
Op Code
Op Code
B0
Jump Relative (One Byte Op Code)
8-Bit Two’s Complement
Displacement Added to
Address (A+2)
One Byte
Effective Address is
(B5 B4 B3 000)2
CALL
instruction to any of eight
Z80 CPU Instruction Description
User’s Manual
Z80 CPU
45
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