w65c51n Western Design Center, Inc., w65c51n Datasheet - Page 33

• Manufacturer Part Number: w65c51n
• Description: Asynchronous Communications Interface Adapter Acia
• Manufacturer: Western Design Center, Inc.

W65C51N6TPG-14 Samples Errata Sheet for Date Code:
1002G002
The current engineering sample is provided in a 28 pin PDIP package. This information
below describes the current known errors and improvements with the current W65C51N
ACIA Engineering Samples found by WDC. Please contact WDC with any other errors
found while evaluating these samples.
Known Issues with Current Engineering Sample (Date Code: 1002G002)
Transmitter Parity:
The transmitter of this part functions differently than previous 6551/65C51 devices. For
all Parity Mode Control (PMC) settings (Bits 7, 6 of the Command Register), the
transmitter will transmit a MARK (1) for Parity (When enabled with Bit 5 of the
Command Register set to “1”). Previous versions would transmit Even, Odd, Mark or
Space parity depending on the PMC bits.
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