ST10F272M-4Q3 STMICROELECTRONICS [STMicroelectronics], ST10F272M-4Q3 Datasheet - Page 25

• Manufacturer Part Number: ST10F272M-4Q3
• Description: 16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST10F272M
5
5.1
5.2
5.2.1
5.2.2
Internal Flash memory
Overview
The on-chip Flash is composed of one matrix module, 256 Kbytes wide. This module is
called IFlash because it is on the ST10 Internal bus.
Figure 5.
The programming operations of the Flash are managed by an embedded Flash
Program/Erase Controller (FPEC). The high voltages needed for Program/Erase operations
are generated internally.
The Data bus is 32-bit wide for fetch accesses to IFlash, whereas it is 16-bit wide for read
accesses to IFlash Control Registers. Write accesses are possible only in the IFlash Control
Registers area.
Functional description
Structure
Table 3
Table 3.
Modules structure
The IFlash module is composed of a bank (Bank 0) of 256 Kbytes of Program Memory
divided in eight sectors (B0F0...B0F7). Bank 0 also contains a reserved sector named Test-
Flash.
IFlash sectors
Reserved IBus area
Registers and Flash internal reserved area
below shows the address space reserved for the Flash module.
Flash structure
Address space reserved for the Flash module
Description
8 Kbyte Test-Flash
Bank 0: 256 Kbyte
Program Memory
Flash Control
Registers
IFlash
+
I-Bus Interface
0x00 0000 to 0x04 FFFF
0x05 0000 to 0x07 FFFF
0x08 0000 to 0x08 FFFF
Addresses
Control Section
Program/Erase
HV and Ref.
Generator
Controller
Internal Flash memory
256 Kbytes
192 Kbytes
64 Kbytes
Size
25/176