IS1678 datasheet(9/54 Pages) MICROCHIP

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Advance Information

DS60001386A-Page 9

IS1678

2.0

APPLICATION INFORMATION

2.1

System Configuration Pins

The I/O pins, P2_0, P2_4, and EAN, place the

IS1678S/SM in operation modes. These pins have

internal pull-ups and enables configuration settings and

firmware updation. Table 2-1 provides system configu-

ration setting details.

TABLE 2-1:

SYSTEM CONFIGURATION SETTINGS

2.2

Control and Indication Pins

The I/O pins, P0_0, P0_5, P1_7, P3_1, P3_2, P3_3,

P3_4, and P3_7, are configuration control and indica-

tion signal pins. The control signals are input to the

IS1678S/SM and the Indication signals are output from

the IS1678S/SM. Table 2-2 provides the default I/O pin

configuration details.

TABLE 2-2:

CONFIGURATION AND INDICATION I/O ASSIGNMENTS

Note 1:

The RTS and CTS pins are fixed and cannot be configured while using the flow control, or else these pins

can be configured as GPIOs.

The RTS pin can only be assigned to P0_0 pin and the CTS pin can only be assigned to P1_7.

P2_0

P2_4

EAN

Operational Mode

IS1678S

Low

High

Write EEPROM and Test mode

High

Normal Operation mode or Application mode

IS1678SM

Low

High

Write Flash

Low

High

Low

Write EEPROM and Test mode

High

Low

Normal Operation/Application mode

P0_0

■

P0_5

■

P1_7

■

P3_1

■

P3_2

■

P3_3

■

P3_4

■

P3_7

■

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