Microchip Technology PRO MATE II, Manual

Page: 30 / 48

PRO MATE
®
II Device Support
DS30243H-page 26

1999 Microchip Technology Inc.
3.8 HCS300/301/320 Options
The programming dialog for HCS300/301/320 devices is shown in Figure 3.8.
Selectable options in this dialog are described in Table 3.5. Options
automatically set are described in Table 3.6.
Figure 3.8: Program Security Device Dialog – HCS300/301/320
Table 3.4: Options Automatically Set – HCS201
Option Set To
SEED The 32-bit SEED is a randomly generated number.
COUNTER The counter is initially set to 0000.
Table 3.5: Selectable Options – HCS300/301/320
Option Description
User Serial
Number The encoder’s 28-bit (7-hex digits) serial number should
be entered here. If the Auto Increment check box is
selected, the serial number and/or user seed will be
automatically incremented when an encoder is
successfully programmed.
Counter Overflow None: None of the overflow bits are set.
Once: One of the overflow bits are set.
Twice: Both overflow bits are set.
Low Voltage Trip Low: V
LOW
bit in transmission set when V
DD
= 3.5V
(HCS300) and V
DD
=8V (HCS301, HCS320).
High: V
LOW
bit in transmission set when V
DD
= 2.2V
(HCS300) and V
DD
= 3.5V (HCS301, HCS320).