Ordering information

ST10F276, ST10F273

2/4

1

Ordering information

Table 1.

Ordering information

1.1

ST10F276/ST10F273 compatibility

The only differences between ST10F276 and ST10F273 devices are the embedded Flash and

RAM resources:

Flash Memory: ST10F276 includes 832 Kbytes of on-chip single voltage Flash divided into

four banks allowing for Read-While-Write Operation. Two banks are mapped on the internal 32-

bit bus (IFLASH) and the two others are mapped on 16-bit XBUS (XFLASH).

●

In ST10F273 devices the XFLASH banks are not available. As a consequence, only the

standard ST10 bootstrap mode can be used (no Alternate Boot Mode).

RAM: The ST10F273 includes 68 Kbytes of on-chip RAM, divided into 3 blocks: 2 Kbytes IRAM

dual-ported RAM block, 2 Kbytes XRAM1 extension RAM block and 64KBytes XRAM2

extension RAM block.

●

In ST10F273 devices the XRAM2 on-chip extension RAM block is reduced to 32 Kbytes.

Note:

There is no built-in feature to allow software to detect if the device is an F276 or an F273. The

missing memory in the ST10F273 can be seen as regular memory. If you wish make two

assemblies of the same PCB with the ST10F276 and ST10F276, we advise to put a pull-up

resistor on an I/O to differentiate the two configurations by software.

Table 2.

XFLASH Blocks User Mode Size

Table 3.

XRAM Blocks User Mode Size

Part Number

Iflash

Xflash

RAM

Temperature range

Package

ST10F276Z5Q3

512KB

320KB

68KB

40/+125

PQFP144

ST10F276Z5T3

512KB

320KB

68KB

40/+125

TQFP144

ST10F273Z4Q3

512KB

No

32KB

40/+125

PQFP144

ST10F273Z4T3

512KB

No

32KB

40/+125

TQFP144

Block

Address

ST10F276

ST10F273

B2F0

09'0000h - 09'FFFFh

64KB

Reserved

B2F1

0A'0000h - 0A'FFFFh

64KB

Reserved

B2F2

0B'0000h - 0B'FFFFh

64KB

Reserved

B3F0

0C'0000h - 0C'FFFFh

64KB

Reserved

B3F1

0D'0000h - 0D'FFFFh

64KB

Reserved

CTRL Registers

0E'0000h - 0E'FFFFh

64KB

Reserved

Block

Address

ST10F276

ST10F273

XRAM1 - 2KB

00'E000h - 00'E7FFh

2KB

2KB

XRAM2 - Standby RAM - 16KB

0F'0000h - 0F'3FFFh

16KB

16KB

XRAM2 - Following 16KB

0F'4000h - 0F'7FFh

16KB

16KB

XRAM2 - Following 32KB

0F'8000h - 0F'FFFFh

32KB

reserved