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ST72389BW4 Datasheet(PDF) 8 Page - STMicroelectronics

No. de pieza ST72389BW4
Descripción Electrónicos  8-BIT MCU WITH NESTED INTERRUPTS, DOT MATRIX LCD, ADC, TIMERS, PWM-BRM, SPI, SCI, I짼C, CAN INTERFACES
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72389BW4 Datasheet(HTML) 8 Page - STMicroelectronics

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1.3 REGISTER & MEMORY MAP
As shown in the Figure 3, 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 location, up to 1Kbyte of RAM, 60
bytes of LCD RAM and up to 24Kbytes of user pro-
gram memory. The RAM space includes up to 256
bytes for the stack from 0100h to 01FFh.
The highest address bytes contain the user reset
and interrupt vectors.
Figure 3. Memory Map
Table 2. Interrupt Vector Map
* available on ST72589 version only.
0000h
512 Bytes RAM
Program Memory
Interrupt & Reset Vectors
HW Registers
047Fh
0080h
Short Addressing
RAM (zero page)
Stack Area
256 Bytes
16-bit Addressing
RAM
007Fh
0480h
9FFFh
Reserved
0100h
01FFh
027Fh
0080h
(see Table 3)
A000h
FFDFh
FFE0h
FFFFh
(see Table 1)
LCD RAM
(60 Bytes)
04BBh
04BCh
0200h
00FFh
1024 Bytes RAM
or 047Fh
24 KBytes
Program Memory
16 KBytes
BFFFh
C000h
Vector Address
Description
Remarks
FFE0-FFE1h
FFE2-FFE3h
FFE4-FFE5h
FFE6-FFE7h
FFE8-FFE9h
FFEA-FFEBh
FFEC-FFEDh
FFEE-FFEFh
FFF0-FFF1h
FFF2-FFF3h
FFF4-FFF5h
FFF6-FFF7h
FFF8-FFF9h
FFFA-FFFBh
FFFC-FFFDh
FFFE-FFFFh
I2C interrupt vector*
SCI interrupt vector
TIMER B interrupt vector
TIMER A interrupt vector
SPI interrupt vector
CAN interrupt vector*
Not used
MCC interrupt vector
External interrupt vector (EI5: port D)
External interrupt vector (EI4: port C)
External interrupt vector (EI3: port B)
External interrupt vector (EI2: port A7..4)
External interrupt vector (EI1: port A3..0)
Non maskable external interrupt vector (NMI)
TRAP (software) interrupt vector
RESET vector
Internal Interrupt
External Interrupt
CPU Interrupt


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