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. B.
• 20 Programmable I/O Lines
• Programmable for Operation in Four Modes: - Input - Output - Bidirectional - Bit-programmable
• Operates in Either I/O or Memory Space
Ordering Information
PACKAGE TEMP. RANGE PDIP Burn-In SBDIP Burn-In 5V 10V PKG. NO.
-40oC to +85oC CDP1851CE CDP1851CEX -40oC to +85oC CDP1851CD
CDP1851E E40.6 E40.6 D40.6
CDP1851CDX CDP1851DX D40.6
Pinout
CDP1851, CDP1851C (PDIP, SBDIP) TOP VIEW
CLOCK 1 CS 2 RA0 3 RA1 4 BUS0 5 BUS1 6 BUS2 7 BUS3 8 BUS4 9 BUS5 10 BUS6 11 BUS7 12 CLEAR 13 A INT 14 B INT 15 B RDY 16 B 17 STROBE B0 18 B1 19 VSS 20 40 VDD 39 RD/WE 38 WR/RE 37 TPB .
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ CMOS Perlph~rals TERMINAL ASSIGNMENT CL.OCI( cs RAD RAI BU.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | CDP1851C |
Intersil Corporation |
CMOS Programmable I/O Interface | |
2 | CDP1851C |
GE |
CMOS Programmable I/O Interface | |
3 | CDP1852 |
Intersil Corporation |
Byte-Wide Input/Output Port | |
4 | CDP1852 |
GE |
Byte-Wide Input/Output Port | |
5 | CDP1852C |
Intersil Corporation |
Byte-Wide Input/Output Port | |
6 | CDP1852C |
GE |
Byte-Wide Input/Output Port | |
7 | CDP1853 |
Intersil Corporation |
N-Bit 1 of 8 Decoder | |
8 | CDP1853 |
GE |
N-Bit 1 of 8 Decoder | |
9 | CDP1853C |
Intersil Corporation |
High-Reliability CMOS N-Bit 1 of 8 Decoder | |
10 | CDP1853C |
GE |
N-Bit 1 of 8 Decoder | |
11 | CDP1854 |
Intersil Corporation |
Programmable Universal Asynchronous Receiver/Transmitter (UART) | |
12 | CDP1854 |
Intersil Corporation |
High Reliability CMOS Programmable Universal Asynchronous Receiver/Transmitter (UART) |