Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 54

• 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

34
UM008005-0205
Z80 CPU
User’s Manual
Examples of Specific Z80 Instructions
After the execution of an instruction that sets a flag, that flag can be used to
control a conditional jump or return instruction. These instructions provide
logical control following the manipulation of single bit, 8-bit byte, or 18-bit
data quantities.
A full set of logical operations, including
CPL
tions between the accumulator and all other 8-bit registers, memory loca-
tions, or immediate operands.
In addition, a full set of arithmetic and logical shifts in both directions are
available which operate on the contents of all 8-bit primary registers or
directly on any memory location. The carry flag can be included or set by
these shift instructions to provide both the testing of shift results and to link
register/register or register/memory shift operations.
Example One:
When a 737-byte data string in memory location DATA must be moved to
location BUFFER, the operation is programmed as follows:
Eleven bytes are required for this operation and each byte of data is moved
in 21 clock cycles.
LD
LD
LD
LDIR
(
NOR
HL, DATA
DE, BUFFER;START ADDRESS OF TARGET BUFFER
BC, 737
), and
NEG
(two’s complement) are available for Boolean opera-
;START ADDRESS OF DATA STRING
;LENGTH OF DATA STRING
;MOVE STRING - TRANSFER MEMORY POINTED
;TO BY HL INTO MEMORY LOCATION POINTED
;TO BY DE INCREMENT HL AND DE,
;DECREMENT BC PROCESS UNTIL BC = 0.
Hardware and Software Implementation Examples
AND
,
OR
,
XOR
(exclusive-
OR
),