Advertisement
Dec/26/2012
errata_s5u1c17001h2_1
8.3 Notes on Use of S5U1C17001H
Wiring between the S1C processor and target connector
When wiring the S1C processor to the target system connector for connecting the
S5U1C17001H, insert a 33ohm resistor in series between the S1C processor DSIO pin and
the connector. This resistor must be placed as close to the S1C processor as possible. If
the reset line is not connected, the system can be operated without this 33ohm resistor.
However, we recommend inserting this resistor to prevent malfunctions. The other pins are
connected directly. The total length of the line must be under 5 cm. A low-level input to the
DSIO pin issues a forced break to set the S1C processor into debug mode. Although this
signal is pulled up through about 100k ohm internally, when not debugging, we recommend
either removing the 33ohm resistor to reduce noise and other problems or pulling this line
up to the VDD level.
Advertisement
