SAF-C504 datasheet(41/71 Pages) INFINEON

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C504

Data Sheet

2000-05

OTP Memory Operation (C504-2E only)

The C504-2E is the OTP version of the C504 microcontroller with a 16Kbyte one-time

programmable (OTP) program memory. Fast programming cycles are achieved (1 byte

in 100

µs) with the C504-2E. Several levels of OTP memory protection can be selected

as well.

To program the device, the C504-2E must be put into the programming mode. Typically,

this is not done in-system, but in a special programming hardware. In the programming

mode, the C504-2E operates as a slave device similar to an EPROM standalone

memory device and must be controlled with address/data information, control lines, and

an external 11.5 V programming voltage.

Figure 20 shows the pins of the C504-2E which are required for controlling of the OTP

programming mode.

Figure 20

C504-2E Programming Mode Configuration

PMSEL1

PMSEL0

XTAL2

XTAL1

P0.0 - 7

V SS

V DD

C504-2E

MCS03360

P2.0 - 7

PALE

EA /

PROG

PRD

RESET

PSEN

PSEL

V PP

Port 2

Port 0

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