ST6220CB3/XXX 데이터 시트보기 (PDF) - STMicroelectronics

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ST6220CB3/XXX

8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, OSCILLATOR SAFEGUARD, SAFE RESET AND 20 PINS

STMicroelectronics 

ST62T08C/T09C ST62T10C/T20C/E20C

PROGRAMMING MODES (Cont’d)

1.4.2 Program Memory

EPROM/OTP programming mode is set by a

+12.5V voltage applied to the TEST/VPP pin. The

programming

flow

of

the

ST62T08C,T09C,T10C,T20C/E20C is described

in the User Manual of the EPROM Programming

Board.

Table 2. ST62T08C, T09C Program Memory Map

Device Address

0000h-0B9Fh

0BA0h-0F9Fh

0FA0h-0FEFh

0FF0h-0FF7h

0FF8h-0FFBh

0FFCh-0FFDh

0FFEh-0FFFh

Description

Reserved

User ROM

Reserved

Interrupt Vectors

Reserved

NMI Interrupt Vector

Reset Vector

Table 3. ST62T10C Program Memory Map

Device Address

0000h-087Fh

0880h-0F9Fh

0FA0h-0FEFh

0FF0h-0FF7h

0FF8h-0FFBh

0FFCh-0FFDh

0FFEh-0FFFh

Description

Reserved

User ROM

Reserved

Interrupt Vectors

Reserved

NMI Interrupt Vector

Reset Vector

Table 4. ST62T20C,E20C Program Memory Map

Device Address

0000h-007Fh

0080h-0F9Fh

0FA0h-0FEFh

0FF0h-0FF7h

0FF8h-0FFBh

0FFCh-0FFDh

0FFEh-0FFFh

Description

Reserved

User ROM

Reserved

Interrupt Vectors

Reserved

NMI Interrupt Vector

Reset Vector

Note: OTP/EPROM devices can be programmed

with the development tools available from STMi-

croelectronics (ST62E2X-EPB or ST622X-KIT).

1.4.3 EPROM Erasing

The EPROM of the windowed package of the

MCUs may be erased by exposure to Ultra Violet

light. The erasure characteristic of the MCUs is

such that erasure begins when the memory is ex-

posed to light with a wave lengths shorter than ap-

proximately 4000Å. It should be noted that sun-

lights and some types of fluorescent lamps have

wavelengths in the range 3000-4000Å.

It is thus recommended that the window of the

MCUs packages be covered by an opaque label to

prevent unintentional erasure problems when test-

ing the application in such an environment.

The recommended erasure procedure of the

MCUs EPROM is the exposure to short wave ul-

traviolet light which have a wave-length 2537A.

The integrated dose (i.e. U.V. intensity x exposure

time) for erasure should be a minimum of 30W-

sec/cm2. The erasure time with this dosage is ap-

proximately 30 to 40 minutes using an ultraviolet

lamp with 12000µW/cm2 power rating. The

ST62E20C should be placed within 2.5cm (1Inch)

of the lamp tubes during erasure.

11/70

99

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