ST7LITE09 datasheet(8/122 Pages) STMICROELECTRONICS

8 / 122 page

ST7LITE0, ST7SUPERLITE

8/122

3 REGISTER & MEMORY MAP

As shown in Figure 3 and Figure 4, the MCU is ca-

pable of addressing 64K bytes of memories and I/

O registers.

The available memory locations consist of up to

128 bytes of register locations, 128 bytes of RAM,

128 bytes of data EEPROM and up to 1.5 Kbytes

of user program memory. The RAM space in-

cludes up to 64 bytes for the stack from 0C0h to

0FFh.

The highest address bytes contain the user reset

and interrupt vectors.

The size of Flash Sector 0 is configurable by Op-

tion byte.

IMPORTANT: Memory locations marked as “Re-

served” must never be accessed. Accessing a re-

seved area can have unpredictable effects on the

device.

Figure 3. Memory Map (ST7LITE0)

0000h

RAM

Flash Memory

(1.5K)

Interrupt & Reset Vectors

HW Registers

0080h

007Fh

0FFFh

(see Table 2)

1000h

107Fh

FFE0h

FFFFh

(see Table 7)

0100h

Reserved

00FFh

Short Addressing

RAM (zero page)

64 Bytes Stack

00C0h

00FFh

0080h

00BFh

(128 Bytes)

Data EEPROM

(128 Bytes)

FA00h

1080h

F9FFh

Reserved

FFDFh

1 Kbytes

0.5 Kbytes

SECTOR 1

SECTOR 0

1.5K FLASH

FFFFh

FC00h

FBFFh

FA00h

PROGRAM MEMORY

1000h

1001h

RCCR0

RCCR1

see section 7.1 on page 23

FFDEh

FFDFh

RCCR0

RCCR1

see section 7.1 on page 23

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