st10f272z2 STMicroelectronics, st10f272z2 Datasheet - Page 26

• Manufacturer Part Number: st10f272z2
• Description: 16-bit Mcu With 256 Kbyte Flash Memory And 20 Kbyte Ram
• Manufacturer: STMicroelectronics

Internal Flash memory
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5.1
5.2
5.2.1
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Internal Flash memory
Overview
The on-chip Flash is composed by one matrix module, 256 KBytes wide.
This module is on ST10 Internal bus, so it is called IFLASH
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 internally generated.
The Data bus is 32-bit wide for fetch accesses to IFLASH, while it is 16 bit wide for read
accesses to IFLASH. Read/write accesses to IFLASH Control Registers area are 16 bit
wide.
Functional description
Structure
The following table shows the Address space reserved to the Flash module.
Table 4.
IFLASH sectors
Reserved IBUS area
Registers and Flash internal reserved area
Flash structure
Address space reserved to the Flash module
Description
Bank 0: 256 Kbyte
8 Kbyte Test-Flash
Program Memory
Flash Control
IFLASH
Registers
+
I-BUS Interface
0x00 0000 to 0x04 FFFF
0x05 0000 to 0x07 FFFF
0x08 0000 to 0x08 FFFF
Control Section
Program/Erase
Addresses
HV and Ref.
Generator
Controller
ST10F272Z2
256 Kbyte
192 Kbyte
64 Kbyte
Size