st62t62cmae STMicroelectronics, st62t62cmae Datasheet - Page 7

• Manufacturer Part Number: st62t62cmae
• Description: 8-bit Otp/eprom/fastrom Mcus With A/d Converter, Safe Reset, Auto-reload Timer And Eeprom
• Manufacturer: STMicroelectronics

MEMORY MAP (Cont’d)
1.3.2 Program Space
Program Space comprises the instructions to be
executed, the data required for immediate ad-
dressing mode instructions, the reserved factory
test area and the user vectors. Program Space is
addressed via the 12-bit Program Counter register
(PC register).
1.3.2.1 Program Memory Protection
The Program Memory in OTP or EPROM devices
can be protected against external readout of mem-
ory by selecting the READOUT PROTECTION op-
tion in the option byte.
In the EPROM parts, READOUT PROTECTION
option can be disactivated only by U.V. erasure
that also results into the whole EPROM context
erasure.
Note: Once the Readout Protection is activated, it
is no longer possible, even for STMicroelectronics,
to gain access to the OTP contents. Returned
parts with a protection set can therefore not be ac-
cepted.
Figure 4. ST62T52C/T62C Program
(*) Reserved areas should be filled with 0FFh
0FEFh
0FFBh
0FFCh
0FFDh
0FFEh
0F9Fh
0FA0h
0FF0h
0FF7h
0FF8h
0FFFh
0000h
087Fh
0880h
ST62T52CM-Auto ST62T62CM-Auto
Memory Map
INTERRUPT VECTORS
USER RESET VECTOR
PROGRAM MEMORY
(OTP/EPROM)
NMI VECTOR
1836 BYTES
RESERVED
RESERVED
RESERVED
USER
*
*
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