st62t62c STMicroelectronics, st62t62c Datasheet - Page 8

• Manufacturer Part Number: st62t62c
• Description: 8-bit Otp/eprom Mcus With A/d Converter, Safe Reset, Auto-reload Timer And Eeprom
• Manufacturer: STMicroelectronics

ST62T52C ST62T62C/E62C
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.
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Figure 4. ST62T52C/T62C Program
(*) Reserved areas should be filled with 0FFh
0FA0h
0FEFh
0FFBh
0FFCh
0FFDh
0FFEh
0FFFh
0F9Fh
0FF0h
0FF7h
0FF8h
0000h
087Fh
0880h
Memory Map
INTERRUPT VECTORS
USER RESET VECTOR
PROGRAM MEMORY
(OTP/EPROM)
NMI VECTOR
1836 BYTES
RESERVED
RESERVED
RESERVED
USER
*
*