MICROCHIP COM5026P

The Standard Microsystems COM5026/COM5046 Baud Rate Generator/Programmable Divider is an N-channel COPLAMOs MOS/LSI device which, from a single crystal (on-chip oscilator) or input frequency is capable of generating 16 externally selectable frequencies. The COM5026/COM5046 is specifically dedicated to generating the full spectrum of 16 asynchronous/synchronous data communication frequencies. One of the sixteen output frequencies is externally selected by four address inputs. Internal re-programmable RoM allows the generation of other frequencies from other crystal frequencies or input frequencies. The four address inputs may be strobe(150ns) or DC loaded. The COM 5026/COM 5046 is basically a programmable 15-stage feedback shift register capable of dividing any modulo up to (2^15 - 1). By using the frequency output, it is possible to generate additional divisions of the master clock frequency by cascading COM 5026/COM 5046's. The frequency output is fed into the XTAL/EXT input on a subsequent device. In this way one crystal or input frequency may be used to generate numerous output frequencies. The COM5026/COM5046 can be driven by either an external crystal or TTL logic level inputs. COM 5026T/COM 5046T is driven by TTL logic level inputs only. THE COM5046 provides a high frequency reference output at one-quarter (1/4) the XTAL/EXT input frequency.

• On chip crystal oscillator or external frequency input
• Choice of 16 output frequencies
• 16 asynchronous/synchronous baud rates
• Direct UART/USRT/ASTRO/USYNRT compatibility
• High frequency reference output*
• TTL, MOS compatibility