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MIGRATING AN APPLICATION FROM ST7263 REV.B TO ST7263B

4.3 REGISTER MAP

A new line must be inserted in the Register Map corresponding to the FLASH Control and

Status Register (FCSR).

Address: 0037h

Read/Write

Reset Value: 0000 0000 (00h)

This register is reserved for use by the Programming Tool software. It controls the FLASH pro-

gramming and erasing operations. For details on customizing FLASH programming methods

and In-Circuit Testing, refer to the ST7 FLASH Programming and ICC Reference Manual.

Table 6. Interrupt Vector Addresses

4.3.1 RAM

In the ST7263 Rev. B, the DATA RAM is up to 512 bytes with 64-byte stacks. In the ST7263B

version, the DATA RAM is 512 bytes with 128-byte stacks. Therefore, the stack address is

also changed:

– In ST7263 Rev.B, the stack is from 0100h to 013Fh

– In ST7263B, the stack is from 0100h to 017Fh

In the same way, 16-bit addressing RAM size is reduced:

– In ST7263 Rev.B, the 16-bit addressing RAM is from 0140h to 023Fh

– In ST7263B, the 16-bit addressing RAM is from 0180h to 023Fh

7

0

0

0

0

0

0

0

0

0

Vector Address

ST7263 Rev.B

ST7263B

FFEE - FFEF

--

USB interrupt vector

FFF0 - FFF1

USB interrupt vector

SCI interrupt vector

FFF2 - FFF3

SCI interrupt vector

I²C interrupt vector

FFF4 - FFF5

I²C interrupt vector

Timer interrupt vector

FFF6 - FFF7

Timer interrupt vector

IT1 to IT8 interrupt vector

FFF8 - FFF9

IT1 to IT8 interrupt vector

USB end suspend mode interrupt vector

FFFA - FFFB

USB End Suspend mode interrupt vector FLASH Start Programming interrupt vector

FFFC - FFFD

TRAP interrupt

TRAP interrupt

FFFE - FFFF

RESET vector

RESET vector