ST7FLITEU05B3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7FLITEU05B3

8-bit MCU with single voltage Flash memory, ADC, timers

STMicroelectronics 

ST7LITEU05 ST7LITEU09

3 REGISTER & MEMORY MAP

As shown in Figure 5, the MCU is capable of ad-

dressing 64K bytes of memories and I/O registers.

The available memory locations consist of 128

bytes of register locations, 128 bytes of RAM and

1 Kbytes of user program memory. The RAM

space includes up to 64 bytes for the stack from

00C0h to 00FFh.

The highest address bytes contain the user reset

and interrupt vectors.

The Flash memory contains two sectors (see Fig-

ure 5) mapped in the upper part of the ST7 ad-

dressing space so the reset and interrupt vectors

are located in Sector 0 (FC00-FFFFh).

The size of Flash Sector 0 and other device op-

tions are configurable by Option 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 5. Memory Map

0000h

007Fh

0080h

HW Registers

(see Table 3)

RAM

(128 Bytes)

00FFh

0100h

0FFFh

1000h

107Fh

1080h

Reserved

DATA

EEPROM

(128 Bytes)

F7FFh

F800h

Reserved

Flash Memory

(2K)

FFDFh

FFE0h

FFFFh

Interrupt & Reset Vectors

(see Table

0080h

00C0h

00FFh

Short Addressing

RAM (zero page)

64-Byte Stack

DEE0h

DEE1h

DEE2h

DEE3h

RCCRH0

RCCRL0

RCCRH1

RCCRL1

see section 7.1 on page 22

2K FLASH

PROGRAM MEMORY

F800h

FBFFh

FC00h

FFFFh

1 Kbyte

SECTOR 1

1 Kbyte

SECTOR 0

Note:

1. DEE0h, DEE1h, DEE2h and DEE3h addresses are located in a reserved area but are special bytes

containing also the RC calibration values which are read-accessible only in user mode. If all the EEPROM

data or Flash space (including the RC calibration values locations) has been erased (after the read-out

protection removal), then the RC calibration values can still be obtained through these addresses.

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