Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 62

• 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

42
UM008005-0205
Z80 CPU
User’s Manual
A unique set of block transfer instructions is provided in the Z80. With a
single instruction, a block of memory of any size can be moved to any
other location in memory. This set of block moves is extremely valuable
when processing large strings of data. With a single instruction, a block of
external memory of any desired length can be searched for any 8-bit
character. When the character is found or the end of the block is reached,
the instruction automatically terminates. Both the block transfer and the
block search instructions can be interrupted during their execution so they
do not occupy the CPU for long periods of time.
The arithmetic and logical instructions operate on data stored in the
accumulator and other general-purpose CPU registers or external memory
locations. The results of the operations are placed in the accumulator and
the appropriate flags are set according to the result of the operation.
An example of an arithmetic operation is adding the accumulator to the
contents of an external memory location. The results of the addition are
placed in the accumulator. This group also includes 16-bit addition and
subtraction between 16-bit CPU registers.
The rotate and shift group allows any register or any memory location to
be rotated right or left, with or without carry either arithmetic or logical.
Also, a digit in the accumulator can be rotated right or left with two digits
in any memory location.
The bit manipulation instructions allow any bit in the accumulator, any
general-purpose register, or any external memory location to be set, reset,
or tested with a single instruction. For example, the most-significant bit of
register H can be reset. This group is especially useful in control
applications and for controlling software flags in general-purpose
programming.
The
various locations in the user’s program. This group uses several different
techniques for obtaining the new program counter address from specific
external memory locations. A unique type of call is the
instruction. This instruction actually contains the new address as a part of
JUMP
,
CALL
, and
RETURN
instructions are used to transfer between
Z80 CPU Instruction Description
RESTART