Specifications

Serial Communications (V40)
The calculation to determine the count value to be programmed into
counter/timer 1 is shown below to be 26. Note that the calculated
count and the programmed count differ by 0.16 percent. To guarantee
proper operation, the percent difference must never be greater than
four. Table 10-3 lists the count values to be programmed into
counter/timer 1 to generate the more common baud rates.
Count = 8 x 10
6
/ (2 x 9600 x 16) = 26.04
Table 10-3
ZT 8832 Baud Rate Counts.
Count Dec/Hex
[1]
Baud Rate Baud Factor
Divided By:
16 64
110 2273/08E1 568/0238
150 1667/0683 417/01A1
300 833/0341 208/00D0
600 417/01A1 104/0068
1200 208/00D0 52/0034
2400 104/0068 26/001A
4800 52/0034 13/000D
9600 26/001A
[2]
19200 13/000D
[2]
38400
[2] [2]
[1]
The count values listed assume the PS bits of the TCKS V40 configuration
register are programmed with logical 0s.
[2]
This combination exceeds the recommended 4% error allowance.
10-14