Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
109
© 2 0 2 2 F a s t w e l v . 0 0 6
WatchDog 0 Timer
WatchDog 1 Timer
Sets the time interval for the corresponding timer counting. The Watchdog timer
counts backwards during operation. If the value is set to 64 seconds, it will count
down to 0 and then generate a RESET, NMI or IRQ signal. If the timer receives a
reset signal during the countdown, it will interrupt the count and start counting
again from 64
[1 Sec], [2 Sec], [4 Sec], [8 Sec], [16 Sec], [32 Sec], [64 Sec], [128 Sec], [256
Sec], [512 Sec]
5.6.1.4 GPIO and I2C Configuration
Screen
of the
“GPIO and I2C Configuration” menu is shown in Figure 5.19, description of the
menu items is given in Table 5.18.
Figure 5.19.
Screen of the “GPIO and I2C Configuration” menu
Table 5.18. Description
of the “GPIO and I2C Configuration” menu
Menu item
Purpose
GPIO PORT0 78H [3..0] FUNC
Sets the port lines to “input” or “output” status. Each line can be individually set as “input”
or “output”.
[*I*]
Line is set as “input”
[*
0*]
Lin
e is set as “output”
GPIO PORT0 78H [3..0] DATA
Sets the output lines of the port to log.1 or log.0 status. Each line can be set to log.1 or
log.0 regardless of the status of the other lines
[*1*]
Line is set to log.1 (+3.3V) state
[*
0*]
Line is set to log.0 state
GPIO PORT0 78H [7..4] & I2C
Selecting the operating mode of lines [7...4] of GPIO port 0
