CDP1842CE, CDP1851, CDP1851ACE Selling Leads, Datasheet
MFG:RCAZ Package Cooled:300 D/C:DIP
CDP1842CE, CDP1851, CDP1851ACE Datasheet download
Part Number: CDP1842CE
MFG: RCAZ
Package Cooled: 300
D/C: DIP
CDP1842CE, CDP1851, CDP1851ACE
- Table of contents:
Info of CDP1842CE
Info of CDP1851
Info of CDP1851ACE
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About CDP1020
PDF/DataSheet Download
Datasheet: CDP1020
File Size: 158108 KB
Manufacturer: INTERSIL [Intersil Corporation]
Download : Click here to Download
About CDP1851
PDF/DataSheet Download
Datasheet: CDP1851
File Size: 58244 KB
Manufacturer: INTERSIL [Intersil Corporation]
Download : Click here to Download
About CDP1020
PDF/DataSheet Download
Datasheet: CDP1020
File Size: 158108 KB
Manufacturer: INTERSIL [Intersil Corporation]
Download : Click here to Download
CDP1851 General Description
THE CDP1851 and CDP1851C are CMOS programmable twoport I/Os designed for use as general-purpose I/O devices. They are directly compatible with CDP1800-series microprocessors functioning at maximum clock frequency. Each port can be programmed in either byte-I/O or bit-programmable modes for interfacing with peripheral devices such as printers and keyboards.
Both ports A and B can be separately programmed to be 8-bit input or output ports with handshaking control lines, RDY and STROBE. Only port A can be programmed to be a bidirectional port. This configuration provides a means for communicating with a peripheral device or microprocessor system on a single 8-bit bus for both transmitting and receiving data. Handshaking signals are provided to maintain proper bus access control. Port A handshaking lines are used for input control and port B handshaking lines are used for output; therefore port B must be in the bit-programmable mode where handshaking is not used.
Ports A and B can be separately bit programmed so that each individual line can be designated as an input or output line. The handshaking lines may also be individually programmed as input or output when port A is not in bidirectional mode.
The CDP1851 has a supply-voltage range of 4V to 10.5V, and the CDP1851C has a range of 4V to 6.5V. Both types are supplied in 40-lead dual-in-line plastic (E suffix) or hermetic ceramic (D suffix) packages. The CDP1851C is also available in chip form (H suffix).
CDP1851 Maximum Ratings
DC Supply-Voltage Range, (VDD)
(Voltage Referenced to VSS Terminal)
CDP1851 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to+11V
CDP1851C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5 to +7V
Input Voltage Range, All Inputs . . . . . . . . . . . . . -0.5 to VDD +0.5V
DC Input Current, Any One Input. . . . . . . . . . . . .. . . . . . . . .±10mA
Device Dissipation Per Output Transistor
For TA = Full Package-Temperature Range
(All Package Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mW
Operating-Temperature Range (TA)
Package Type D, H . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC
Package Type E . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to +85oC
(Voltage Referenced to VSS Terminal)
CDP1851 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to+11V
CDP1851C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5 to +7V
Input Voltage Range, All Inputs . . . . . . . . . . . . . -0.5 to VDD +0.5V
DC Input Current, Any One Input. . . . . . . . . . . . .. . . . . . . . .±10mA
Device Dissipation Per Output Transistor
For TA = Full Package-Temperature Range
(All Package Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mW
Operating-Temperature Range (TA)
Package Type D, H . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC
Package Type E . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to +85oC
CDP1851 Features
• 20 Programmable I/O Lines
• Programmable for Operation in Four Modes:
- Input
- Output
- Bidirectional
- Bit-programmable
• Operates in Either I/O or Memory Space
• Programmable for Operation in Four Modes:
- Input
- Output
- Bidirectional
- Bit-programmable
• Operates in Either I/O or Memory Space
CDP1851 Connection Diagram
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