ST72T331 STMICROELECTRONICS [STMicroelectronics], ST72T331 Datasheet - Page 11

• Manufacturer Part Number: ST72T331
• Description: 8-BIT MCU WITH 8 TO 16K OTP/EPROM, 256 EEPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

1.4 MEMORY MAP
Figure 7. Program Memory Map
Table 3. Interrupt Vector Map
Vector Address
FFEC-FFEDh
FFEA-FFEBh
FFFC-FFFDh
FFEE-FFEFh
FFFA-FFFBh
FFFE-FFFFh
FFE0-FFE1h
FFE2-FFE3h
FFE4-FFE5h
FFE6-FFE7h
FFE8-FFE9h
FFF0-FFF1h
FFF2-FFF3h
FFF4-FFF5h
FFF6-FFF7h
FFF8-FFF9h
01FFh
0200h / 0280h
E000h
027Fh
FFDFh
007Fh
0BFFh
0CFFh
BFFFh
C000h
FFFFh
0080h
0C00h
0D00h
0000h
FFE0h
Interrupt & Reset Vectors
256 Bytes
8K Bytes
Program
Memory
HW Registers
512 Bytes RAM
(see
(see
Reserved
Reserved
384 Bytes RAM
Table
Table
EEPROM
16K Bytes
Program
Memory
TRAP (software) Interrupt Vector
3)
4)
External Interrupt Vector EI3
External Interrupt Vector EI2
External Interrupt Vector EI1
External Interrupt Vector EI0
EEPROM Interrupt Vector
TIMER B Interrupt Vector
TIMER A Interrupt Vector
SCI Interrupt Vector
SPI interrupt vector
RESET Vector
Description
Not Used
Not Used
Not Used
Not Used
Not Used
0080h
00FFh
01FFh
01FFh
00FFh
027Fh
0100h
0200h
0080h
0100h
16-bit Addressing RAM
16-bit Addressing RAM
Short Addressing
RAM (zero page)
Short Addressing
RAM (zero page)
16-bit Addressing
256 Bytes Stack/
ST72E331 ST72T331
256 Bytes Stack/
External Interrupt
External Interrupt
External Interrupt
External Interrupt
Internal Interrupt
Internal Interrupt
Internal Interrupt
Internal Interrupt
Internal Interrupt
RAM
CPU Interrupt
Remarks
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