Zilog S3F80QB Bedienungsanleitung PDF herunterladen (Seite 20)

UM026703-1014 Keypad Circuit

S3F80QB Development Kit

User Manual

Keypad Circuit

The keypad circuit features 16 switches connected to eight pins on the MCU. These pins

are configured as outputs for P1.3–P1.0, and are configured as inputs with pull-ups

enabled for P0.7–P0.4. The keypad circuit is shown in Figure 18.

ISP Connector

The ISP connector (J6) provides an interface between the S3 Flash ISP tool and the

S3F80QB device. See Figure 19 for an illustration of the ISP connector.

Figure 17. The Reset Circuit

Figure 18. The Keypad Circuit

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Zilog S3F80QB Bedienungsanleitung Seite 20