Microchip Technology HCS201-I/P

When a button input is activated, HCS201 produces a 66-bit transmission comprising a 32-bit hopping portion and 34 fixed/status bits. On-chip EEPROM holds the crypt key, serial number, configuration, and synchronization value. The encoder uses a PWM DATA output and a compatible receiver must learn and validate the transmitter.

LCDChip registers 8-DIP (0.300", 7.62mm). Microchip's product identification system defines /P as an eight-lead, 300-mil plastic DIP and -I as -40°C to +85°C. This through-hole footprint is not interchangeable with the /SN SOIC or /ST TSSOP options.

Layout checks

• Verify row spacing and hole pattern against the controlled package drawing.
• Orient pin 1 before routing the button inputs and supply.
• Do not reuse a surface-mount land pattern.

The expected local JPG is absent and the production package URL returns HTTP 404; retain this as an unpublished draft until artwork is verified.

Microchip's eight-pin table assigns pin 1 S0 (switch input 0), pin 2 S1, pin 3 S2 (also programming clock), pin 4 VDDB (battery input for step-up control), pin 5 VSS, pin 6 DATA (PWM output and programming data), pin 7 STEP (step-up switch control), and pin 8 VDD. Follow the datasheet's programming and application circuits for external connections.

Apply the detailed electrical and timing tables under their specified test conditions; the feature summary is not a substitute for design limits.

Other HCS-family encoders are not unconditional replacements. Compare code format, input count, programming method, step-up behavior, receiver learning, temperature grade, and package. No unverified LCDChip alternative link is asserted.

Microchip's HCS201 KEELOQ Code Hopping Encoder Data Sheet, DS41098D, defines the pin map, transmission format, operating features, electrical limits, and product identification system. Use the manufacturer's latest controlled revision and current lifecycle status during qualification.

Verify marking, package dimensions, traceable lot, button inputs, and DATA waveform. Protect manufacturer codes and encoder keys through controlled provisioning. Test receiver learning, counter resynchronization, and low-battery signaling. Review legacy cipher suitability with a current security assessment.

Use the current Microchip datasheet for absolute limits, recommended conditions, timing, programming, and package dimensions. Verify receiver learning and security architecture, then deploy a validated 8-DIP JPG before publication.