CDP1851E/CE, CDP1852, CDP1852ACE Selling Leads, Datasheet
MFG:N/A Package Cooled:SMD D/C:3000
CDP1851E/CE, CDP1852, CDP1852ACE Datasheet download
Part Number: CDP1851E/CE
MFG: N/A
Package Cooled: SMD
D/C: 3000
CDP1851E/CE, CDP1852, CDP1852ACE
- Table of contents:
Info of CDP1851E/CE
Info of CDP1852
Info of CDP1852ACE
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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 CDP1852
PDF/DataSheet Download
Datasheet: CDP1852
File Size: 156978 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
CDP1852 General Description
The CDP1852 and CDP1852C are parallel, 8-bit, mode-programmable input/output ports. They are compatible and will interface directly with CDP1800-series microprocessors. They are also useful as 8-bit address latches when used with the CDP1800 multiplexed address bus and as I/O ports in generalpurpose applications.
The mode control is used to program the device as an input port (mode = 0) or as an output port (mode = 1). The SR/SR output can be used as a signal to indicate when data is ready to be transferred. In the input mode, a peripheral device can strobe data into the CDP1852, and microprocessor can read that data by device selection. In the output mode, a microprocessor strobes data into the CDP1852, and handshaking is established with a peripheral device when the CDP1852 is deselected. In the input mode, data at the data-in terminals (DI0-DI7) is strobed into the port's 8-bit register by a high (1) level on the clock line. The negative high-to-low transition of the clock latches the data in the register and sets the service request output low (SR/SR = 0). When CS1/CS1 and CS2 are high (CS1/CS1 and CS2 = 1), the three-state output drivers are enabled and data in the 8-bit register appear at the data-out terminals (D00-D07). When either CS1/CS1 or CS2 goes low (CS1/CS1 or CS2 = 0), the data-out terminals are three-stated and the service request output returns high (SR/SR =1). In the output mode, the output drivers are enabled at all times. Data at the data-in terminals (DI0-DI7) is strobed into the 8-bit register when CS1/CS1 is low (CS1/CS1 = 0) and CS2 and the clock are high (1), and are present at the data-out terminals (D00-D07). The negative high-to-low transition of the clock latches the data in the register. The SR/SR output goes high (SR/SR = 1) when the device is deselected (CS1/CS1 = 1 or CS2 = 0) and returns low (SR/SR = 0) on the following trailing edge of the clock.
The mode control is used to program the device as an input port (mode = 0) or as an output port (mode = 1). The SR/SR output can be used as a signal to indicate when data is ready to be transferred. In the input mode, a peripheral device can strobe data into the CDP1852, and microprocessor can read that data by device selection. In the output mode, a microprocessor strobes data into the CDP1852, and handshaking is established with a peripheral device when the CDP1852 is deselected. In the input mode, data at the data-in terminals (DI0-DI7) is strobed into the port's 8-bit register by a high (1) level on the clock line. The negative high-to-low transition of the clock latches the data in the register and sets the service request output low (SR/SR = 0). When CS1/CS1 and CS2 are high (CS1/CS1 and CS2 = 1), the three-state output drivers are enabled and data in the 8-bit register appear at the data-out terminals (D00-D07). When either CS1/CS1 or CS2 goes low (CS1/CS1 or CS2 = 0), the data-out terminals are three-stated and the service request output returns high (SR/SR =1). In the output mode, the output drivers are enabled at all times. Data at the data-in terminals (DI0-DI7) is strobed into the 8-bit register when CS1/CS1 is low (CS1/CS1 = 0) and CS2 and the clock are high (1), and are present at the data-out terminals (D00-D07). The negative high-to-low transition of the clock latches the data in the register. The SR/SR output goes high (SR/SR = 1) when the device is deselected (CS1/CS1 = 1 or CS2 = 0) and returns low (SR/SR = 0) on the following trailing edge of the clock.
CDP1852 Maximum Ratings
DC Supply-voltage Range, (VDD) (Voltage Referenced to VSS Terminal) CDP1852 . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to +11V
CDP1852C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . -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. . . . . . . . . . . . . . . . . . . .. . . . .. . . . .. . . . .. . . . .. . . . .. . . . . . . . .. . . . .. . . . .100mW
For TA = Full Package-Temperature Range (All Package Type)
CDP1852C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . -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. . . . . . . . . . . . . . . . . . . .. . . . .. . . . .. . . . .. . . . .. . . . .. . . . . . . . .. . . . .. . . . .100mW
For TA = Full Package-Temperature Range (All Package Type)
CDP1852 Features
• Static Silicon-Gate CMOS Circuitry
• Parallel 8-Bit Data Register and Buffer
• Handshaking Via Service Request Flip-Flop
• Low Quiescent and Operating Power
• Interfaces Directly with CDP1800-Series Microprocessors
• Single Voltage Supply
• Full Military Temperature Range (-55oC to +125oC)
• Parallel 8-Bit Data Register and Buffer
• Handshaking Via Service Request Flip-Flop
• Low Quiescent and Operating Power
• Interfaces Directly with CDP1800-Series Microprocessors
• Single Voltage Supply
• Full Military Temperature Range (-55oC to +125oC)
CDP1852 Connection Diagram
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