SPC560P34x, SPC560P40x

Hardware configuration to select boot mode

Doc ID 022359 Rev 2

5/11

1

Hardware configuration to select boot mode

The SPC560P34x/SPC560P40x devices detect the serial boot mode based on external

pins.

To enter boot mode via FlexCAN or LINFlex, the device must be forced into an Alternate

Boot Loader Mode via the FAB (Force Alternate Boot Mode), which must be asserted before

initiating the reset sequence. The type of alternate boot mode is selected according to the

ABS (Alternate Boot Selector) pins (see Table 1).

Boot configuration pins are:

●

PAD A[2] - ABS[0],

●

PAD A[3] - ABS[1],

●

PAD A[4] - FAB

Note:

PAD A[2] - ABS[0] is not bonded on SPC560P34x/SPC560P40x LQFP64 so for this

package the option 'FlexCAN without Autobaud ' is not available and the internal pull-down

on PAD A[2] assures that it is at low logical value at reset."

1.1

SPC560P34x/SPC560P40x boot pins

The TX/RX pin (LINFlex_0 and FlexCAN_0) used for serial boot and configuration boot pins

to select the serial boot mode are described in the Table 2 for LQFP64 and LQFP100

packages.

Table 1.

Hardware configuration to select boot mode

1.

During reset the boot configuration pins are weak pull down.

ABS[1,0]

Standby-RAM

boot flag

Boot ID

Boot mode

1

00

0

-

Serial Boot via LINFlex without autobaud

1

01

0

-

Serial Boot via FlexCAN without autobaud

1

100-

Scan of both serial interfaces (FlexCAN and

LINFlex) for Serial Boot with autobaud

Table 2.

SPC560P34x/SPC560P40x boot pins

Port pin

Function

Pin

64-pin

100-pin

ABS[0]

-

57

A[3](1)

ABS[1]

41

64

A[4](1)

FAB

48

75

B[0]

CAN_0 TX

49

76

B[1]

CAN_0 RX

50

77

B[2]

LIN_0 TX

51

79