MC33560

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Table 1. PIN FUNCTION DESCRIPTION

Pin

Name/Function

Type

Symbol

CARD INTERFACE

19

CRDC8

I/O

General purpose input/output. It has the same behavior as CRDIO. It can be connected to the

C8 pin of the card connector.

CURRENT LIMIT AND THERMAL PROTECTION

1

PGND

POWER

This pin is the return path for the current flowing into Pin 22 (L1). It must be connected to

CRDGND using appropriate grounding techniques.

12

CRDGND

POWER

This pin is the signal ground. It must be connected to the ground pin of the card connector. It is

the reference level for all analog and digital signals.

13

POWER

Pins 11, 14, 15, 16 and 19.

22

L1

POWER

This pin connects to an external inductance for the DC−DC converter. Please refer to the

description of the DC−DC converter functional block.

23

POWER

This pin is connected to the supply voltage. Logic level “1” of Pins 2 to 10, 17, 18, 20 and 21 is

minimum value.

24

ILIM

POWER

This pin can be connected to the PGND pin, or to a resistor connected to PGND, or left open,

depending on the peak coil current needed to supply the card.

PROGRAMMING AND STATUS FUNCTIONS

The MC33560 features a programming interface and a status interface. Figure 20 shows how to enter and exit programming

mode; Table 2 shows which pins are used to access the various functions.

PWRON

CS

RDYMOD (in)

IO

RESET

PROGRAM DATA VALUE

PROGRAM DATA VALUE

PROGRAM DATA VALUE

ENTER

PROGRAMMING

MODE

LATCH

PROGRAM

VALUE

EXIT

PROGRAMMING

MODE

Figure 20. MC33560 Programming Sequence

Table 2. PIN USE FOR PROGRAMMING AND STATUS FUNCTIONS

Programs CRDV-

CC

TO 3 V/5 V

ON/OFF

Select

Clock Input

Program ASYCLKIN

Divide Ratio

Poll Card

Status

Status

RDYMOD

(In/Out)

Force to 0

READ

Force to 0

Force to 0

READ

READ

CS (In)

rising edge

0

rising edge

rising edge

0

0

PWRON

0/1

0/1

0 or Hi−z

1

RESET(In)

Programs CLK

Input/Divide Ratio

NOT USED

0/1

0/1

NOT USED

NOT USED

I/O(In)

Programs CLK

Input/Divide Ratio

NOT USED

0/1

0/1

NOT USED

NOT USED