SAB-C505C-4E View Datasheet(PDF) - Infineon Technologies

Part Name

Description

Manufacturer

SAB-C505C-4E

8-bit Single-chip Microcontroller

Infineon Technologies 

C505 / C505C

C505A / C505CA

Table 11

Pin Definitions and Functions in Programming Mode (cont’d)

Symbol

P2.0-7

Pin Number I/O

*)

18-25

I

PSEN

26

I

PROG 27

I

EA/VPP

29

–

D7-0

30-37

I/O

N.C.

1-3, 6, 11-13, –

28, 38-44

*) I = Input

O = Output

Function

Address lines

P2.0-7 are used as multiplexed address input lines A0-A7 and

A8-A14. A8-A14 must be latched with PALE.

Program store enable

This input must be at static “0“ level during the whole

programming mode.

Programming mode write strobe

This input is used in programming mode as a write strobe for

OTP memory program, and lock bit write operations During

basic programming mode selection a low level must be applied

to PROG.

External Access / Programming voltage

This pin must be at 11.5V (VPP) voltage level during

programming of an OTP memory byte or lock bit. During an

OTP memory read operation this pin must be at VIH high level.

This pin is also used for basic programming mode selection. At

basic programming mode selection a low level must be applied

to EA/VPP.

Data lines 0-7

During programming mode, data bytes are transferred via the

bidirectional port 0 data lines.

Not Connected

These pins should not be connected in programming mode.

Data Sheet

53

08.00

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