ST72334N2B7(2003) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72334N2B7
(Rev.:2003)

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES

STMicroelectronics 

ST72334J/N, ST72314J/N, ST72124J

4 REGISTER & MEMORY MAP

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

addressing 64K bytes of memories and I/O regis-

ters.

The available memory locations consist of 128

bytes of register locations, 384 or 512 bytes of

RAM, up to 256 bytes of data EEPROM and 4 or

8 Kbytes of user program memory. The RAM

Figure 5. Memory Map

space includes up to 256 bytes for the stack from

0100h to 01FFh.

The highest address bytes contain the user reset

and interrupt vectors.

IMPORTANT: Memory locations marked as “Re-

served” must never be accessed. Accessing a re-

served area can have unpredictable effects on the

device.

0000h

007Fh

0080h

01FFh

HW Registers

(see Table 2)

384 Bytes RAM

027Fh

512 Bytes RAM

0200h / 0280h

0BFFh

0C00h

0CFFh

0D00h

BFFFh

C000h

E000h

FFDFh

Reserved

256 Bytes Data EEPROM

Reserved

8K Bytes

Program

Memory

16K Bytes

Program

Memory

FFE0h

Interrupt & Reset Vectors

(see Table 5 on page 34)

FFFFh

0080h

00FFh

0100h

01FFh

Short Addressing RAM

Zero page

(128 Bytes)

Stack or

16-bit Addressing RAM

(256 Bytes)

0080h

00FFh

0100h

01FFh

Short Addressing RAM

Zero page

(128 Bytes)

Stack or

16-bit Addressing RAM

(256 Bytes)

0200h

027Fh

16-bit Addressing

RAM

C000h

E000h

FFFFh

16 KBytes

8 KBytes

13/153

Share Link: