ST7263BH2 STMicroelectronics, ST7263BH2 Datasheet - Page 21

• Manufacturer Part Number: ST7263BH2
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
• Manufacturer: STMicroelectronics

Specifications of ST7263BH2

• 4, 8, 16 Or 32 Kbytes Program Memory: high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection

ST7263Bxx
3
Caution:
Table 5.
Vector address
FFE0h-FFEDh
FFEEh-FFEFh
FFFCh-FFFDh
FFFEh-FFFFh
FFFAh-FFFBh
FFF0h-FFF1h
FFF2h-FFF3h
FFF4h-FFF5h
FFF6h-FFF7h
FFF8h-FFF9h
Register and memory map
As shown in
registers.
The available memory locations consist of up to 1024 bytes of RAM including 64 bytes of
register locations, and up to 32K bytes of user program memory in which the upper 32 bytes
are reserved for interrupt vectors. The RAM space includes up to 128 bytes for the stack
from 0100h to 017Fh.
The highest address bytes contain the user reset and interrupt vectors.
Memory locations noted “Reserved” must never be accessed. Accessing a reserved area
can have unpredictable effects on the device.
Figure 7.
Interrupt vector map
01BF / 023F / 043Fh
01C0 / 0240 / 0440h
USB End Suspend mode interrupt vector
Flash start programming interrupt vector
TRAP (software) interrupt vector
IT1 to IT8 interrupt vector
Figure
Memory map
TIMER interrupt vector
FFDFh
FFE0h
FFFFh
7FFFh
003Fh
0000h
0040h
8000h
USB interrupt vector
SCI interrupt vector
I²C interrupt vector
Reserved area
RESET vector
Description
7, the MCU is capable of addressing 32 Kbytes of memories and I/O
Interrupt & Reset Vectors
(384 / 512 / 1024 Bytes)
(4 / 8 / 16 / 32 KBytes)
Program memory
(See Table 5)
(See Table 4)
HW registers
Reserved
RAM
Doc ID 7516 Rev 8
Masked
None
None
I- bit
I- bit
I- bit
I- bit
I- bit
I- bit
I- bit
0040h
01BF / 023F / 043Fh
FFDFh
C000h
E000h
8000h
F000h
External interrupts
External interrupt
Internal interrupt
Internal interrupt
Internal interrupt
Internal interrupt
Internal interrupt
CPU interrupt
Remarks
017Fh
0100h
00FFh
0180h
Register and memory map
32 KBytes
16 KBytes
8 KBytes
4 KBytes
Short Addressing
RAM (192 bytes)
16-bit Addressing
(128 Bytes)
Stack
RAM
Exit from Halt
Yes
Yes
Yes
Yes
No
No
No
No
No
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