HMS87C1202A datasheet(73/88 Pages) HYNIX

73 / 88 page

Apr. 2001 ver 1.0

HMS87C130XA/120XA/110XA

20. OTP PROGRAMMING

The HMS87C130XA is one-time PROM(OTP) microcon-

troller with 4K/2K bytes electrically programmable read

only memory.

To programming the OTP device, user must use the uni-

versal programmer which is support Hynix microcontrol-

lers.

20.1 DEVICE CONFIGURATION AREA

The Device Configuration Area can be programmed or left

unprogrammed to select device configuration such as secu-

rity bit, power on reset, RC-oscillation, PFD level select

and open drain port selection .

This area is not accessible during normal execution but is

readable and writable during program / verify.

Figure 20-1 Device Configuration Area

0 : Allow Code Read Out

1 : Prohibit Code Read Out

SECURITY BIT

0 : PFD Level High (2.4~2.6V)

1 : PFD Level Low (1.6~1.8V)

PFD Level Select

CONFIG

ADDRESS : 707FH

POREN

OPDR1

OPDR0

LOCK

PFD

RC_OPT

Configuration Register

LEVEL

0 : Normal Oscillator

1 : External RC Oscillator

RC Otion

00 : Normal Port

01 : Open Drain RA0

Open Drain Port Selection

10 : Open Drain RA0/RB2

11 : Open Drain RA0/RB2/RB3/RC0

0 : Power on RESET Disable

1 : Power on RESET Enable

Power on RESET

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