Cypress enCoRe CY7C602xx Bedienungsanleitung PDF herunterladen (Seite 43)

CY7C601xx, CY7C602xx

Document 38-16016 Rev. *E Page 43 of 68

16.2.21 P3 Configuration

16.2.22 P4 Configuration

Table 16-18. P3 Configuration (P3CR) [0x16] [R/W]

Bit # 7 6 5 4 3 2 1 0

Field Reserved Int Enable Int Act Low TTL Thresh High Sink Open Drain Pull Up Enable Output Enable

Read/Write –R/WR/WR/WR/W R/W R/W R/W

Default 00000000

In CY7C602xx, this register controls the operation of pins P3.0–P3.1. In CY7C601xx, this register controls the operation of pins

P3.0–P3.7.

The 50 mA sink drive capability is only available on pin P3.7 and only on CY7C601xx. In CY7C602xx, only 8 mA sink drive

capability is available on this pin regardless of the setting of the High Sink bit.

Table 16-19. P4 Configuration (P4CR) [0x17] [R/W]

Bit # 7 6 5 4 3 2 1 0

Field Reserved Int Enable Int Act Low TTL Thresh High Sink Open Drain Pull Up Enable Output Enable

Read/Write – R/W R/W R/W R/W R/W R/W R/W

Default 0 0 0 0 0 0 0 0

This register exists only in CY7C601xx. This register controls the operation of pins P4.0–P4.3.

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