Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 42
![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: 42 of 308
- Download datasheet (2Mb)
22
INTERRUPT RESPONSE
UM008005-0205
Z80 CPU
User’s Manual
Overview
Interrupt Enable/Disable
An interrupt allows peripheral devices to suspend CPU operation and force
the CPU to start a peripheral service routine. This service routine usually
involves the exchange of data, status, or control information between the
CPU and the peripheral. When the service routine is completed, the CPU
returns to the operation from which it was interrupted.
The Z80 CPU has two interrupt inputs, a software maskable interrupt (INT)
and a non-maskable interrupt (NMI). The non-maskable interrupt cannot be
disabled by the programmer and is accepted whenever a peripheral device
requests it. This interrupt is generally reserved for very important functions
that can be enabled or disabled selectively by the programmer. This routine
allows the programmer to disable the interrupt during periods when his
program has timing constraints that do not allow interrupt. In the Z80 CPU,
there is an interrupt enable flip-flop (IFF) that is set or reset by the
programmer using the Enable Interrupt (EI) and Disable Interrupt (DI)
instructions. When the IFF is reset, an interrupt cannot be accepted by the
CPU.
The two enable flip-flops are IFF1 and IFF2.
The state of IFF1 is used to inhibit interrupts while IFF2 is used as a
temporary storage location for IFF1.
Disables interrupts
from being accepted
IFF1
location for IFF1
Temporary storage
IFF2
Overview
Related parts for Z84C2008PEG
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![Z8018218FSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
Communication Controllers, ZILOG INTELLIGENT PERIPHERAL CONTROLLER (ZIP)
Manufacturer:
Zilog, Inc.
Datasheet:
![Z8F64200100KITG](/photos/9/20/92054/z8f64200100kitg_tmb.jpg)
Part Number:
Description:
KIT DEV FOR Z8 ENCORE 16K TO 64K
Manufacturer:
Zilog
Datasheet:
![Z8F08A28100KITG](/photos/9/22/92241/z8f08a28100kitg_tmb.jpg)
Part Number:
Description:
KIT DEV Z8 ENCORE XP 28-PIN
Manufacturer:
Zilog
Datasheet:
![Z8F08200100KITG](/photos/9/22/92242/z8f08200100kitg_tmb.jpg)
Part Number:
Description:
DEV KIT FOR Z8 ENCORE 8K/4K
Manufacturer:
Zilog
Datasheet:
![Z8F04A28100KITG](/photos/9/22/92243/z8f04a28100kitg_tmb.jpg)
Part Number:
Description:
KIT DEV Z8 ENCORE XP 28-PIN
Manufacturer:
Zilog
Datasheet:
![Z8F08200100KIT](/images/manufacturer_photos/0/7/729/zilog_tmb.jpg)
Part Number:
Description:
DEV KIT FOR Z8 ENCORE 4K TO 8K
Manufacturer:
Zilog
Datasheet:
![Z86C6116FSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
CMOS Z8 microcontroller. ROM 16 Kbytes, RAM 256 bytes, speed 16 MHz, 32 lines I/O, 3.0V to 5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
![Z86E0208PSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
Low-cost microcontroller. 512 bytes ROM, 61 bytes RAM, 8 MHz
Manufacturer:
Zilog, Inc.
Datasheet:
![Z86E40](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
Z8 4K OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
![Z88C0020VEC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
CMOS SUPER8 ROMLESS MCU
Manufacturer:
Zilog, Inc.
Datasheet:
![Z86E0812SSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
SL1866 CMOSZ8 OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
![Z86E0812PSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
SL1866 CMOSZ8 OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
![Z86E0412PSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
OTP (KB) = 1, RAM = 125, Speed = 12, I/O = 14, 8-bit Timers = 2, Comm Interfaces Other Features = Por, LV Protect, Voltage = 4.5-5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
![Z9023306PSC](/images/manufacturer_photos/0/7/730/zilog__inc__tmb.jpg)
Part Number:
Description:
Manufacturer:
Zilog, Inc.
Datasheet: