Data Sheet

fido5100/fido5200

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. G | 8 of 21

Figure 6. Pin Configuration

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Direction1

Description

A1

D02/AD02

I/O

Data Bus Bit 02 Nonmultiplexed/Data Bus Bit 02 Multiplexed. This is a multifunction pin.

When MBS = 0, Pin A1 (D02) is Data Bus Bit 02 to and from the REM switch for the

nonmultiplexed address data bus.

When MBS = 1, Pin A1 (AD02) is for the multiplexed address data bus, Bit 02 of the address

(LSB), and Bit 02 of the data.

A2

D04/AD04

I/O

Data Bus Bit 04 Nonmultiplexed/Data Bus Bit 04 Multiplexed. This is a multifunction pin.

When MBS = 0, Pin A2 (D04) is Data Bus Bit 04 to and from the REM switch for the

nonmultiplexed address data bus.

When MBS = 1, Pin A2 (AD04) is for the multiplexed address data bus, Bit 04 of the address, Bit

04 of the data.

A3

D07

I/O

Data Bus Bit 07. Pin A3 is Data Bus Bit 07 to and from the REM switch.

A4

D11

I/O

Data Bus Bit 11. Pin A4 is Data Bus Bit 11 to and from the REM switch.

A5

D15

I/O

Data Bus Bit 15. Pin A5 is Data Bus Bit 15 to and from the REM switch.

A6

D18

I/O

Data Bus Bit 18. Pin A6 is Data Bus Bit 18 to and from the REM switch.

A7

D19

I/O

Data Bus Bit 19. Pin A7 is Data Bus Bit 19 to and from the REM switch.

A8

D22

I/O

Data Bus Bit 22. Pin A8 is Data Bus Bit 22 to and from the REM switch.

A9

D25

I/O

Data Bus Bit 25. Pin A9 is Data Bus Bit 25 to and from the REM switch.