Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

Expansion of user memory

CPUs and expansion housings

3

3.12.4 PCD1.M1x0

The user memory for PCD1 CPUs can be expanded with RAM, EPROM and, from

firmware version 002, with Flash EPROM, up to a maximum of 1 Mbit.

The base memory thus released can be configured as extension memory and used

to hold 13 Kbytes of texts and DBs.

As the price differences between the different memory chips are very small, we rec-

ommend the use of the following types:

Memory type Item-no. Typical codes Size

RAM 4 502 7013 01) BS62LV1025 PC-70

LP621024D-70LL

SRM20100LLC70

HY628100ALP-70

GM76C8128CLL-70

MEL M5M51008BP-70L

1 Mbit / 128 Kbytes

EPROM2) 4 502 7126 0 AM27C010-90 DC

NM27C01Q-90

M27C1001-10F1

1 Mbit / 128 Kbytes

Flash EPROM3) 4 502 7141 0 AM29F010-70PC 1 Mbit / 112 Kbytes4)

1) Where RAM components not approved by Saia are used, there is a risk of losing data

2) The use of EPROMs is obsolete; use Flash EPROM instead

3) Flash EPROM is supported from firmware version 002 only

4) To hold the configuration, a portion of memory is lost, so for this chip,112 Kbytes rather than 128 are available to

the user

The following chips will work, but are no longer recommended for new installations:

Memory type Item-no. Typical codes Size

RAM 4 502 5414 01) SRM2B256LCX70

HY62256ALP-70

GM76C256CLL-70

MEL M5M5256DP-70LL

TC55257DPL-70L

256 Kbits / 32 Kbytes

EPROM2) 4 502 3958 0 AM27C512-90 DC

UPD27C512D-10

M27C512-10XF1

M27C512-10F1

512 Kbits / 64 Kbytes