Data sheet: Non-volatile RAM NVR2
The assembly is a replacement for:
• 64k non-volatile SRAM DS1225Y-150IND+ (Dallas Semiconductor)
• 256k non-volatile SRAM DS1230Y-120IND, DS1230AB-70IND+,
DS1230Y-70IND+ (Dallas Semiconductor), STK16C88-WF45I (Cy-
press Semiconductor Corp.)
Features
• Non-volatile asynchronous SRAM with 32k x 8 bits
• magnetoresistive RAM (MRAM) as non-volatile memory without re-
strictions in relation to the number of write cycles
• Battery to retain the memory contents no longer necessary due to
MRAM, regular replacement of the novram assembly not required
• Dimensions match the existing socket for the novram assembly to be
replaced
• Proven pin and functional compatibility with the novram assemblies to
be replaced (unused connections are terminated such that they can be
ignored).
Mechanical data
Dimensions of the printed circuit
board
Connection X1, X2
Ambient temperature (operation)
Degree of soiling
Degree of protection
Weight
Electrical data
Power supply
• Voltage
• Current consumption
Digital inputs
• High level
• Low level
Digital outputs
• High level
• Low level
Time for write and read access
38 mm x 19.2 mm (8-layer)
Solder pin (L x Ø) 5 x 0.5 mm
-25 °C to +70 °C, class T3 corresponding to
EN50155 (2007)
PD2 according to EN50124 part 1 (2006)
IP00 according to EN60529 (2000)
< 40 g
• DC 5 V ±10%
• I < 150 mA
5 V TTL level
• 2.0 V < U
High
< 5.25 V
• 0 V < U
Low
< 0.8 V
5 V TTL level
• 3.5 V < U
High
< 5.25 V
• 0 V < U
Low
< 0.4 V
< 60 ns
Document no.: 94303185191, Version: 29.11.2019, AA01
(Translation of the German version dated 14.10.2019, AA01)
Kiepe Electric GmbH
Kiepe-Platz 1, D-40599 Düsseldorf
+49 (0) 211 / 74 97 – 0
info.kiepe@knorr-bremse.com, www.kiepe.knorr-bremse.com
1
Data sheet: Non-volatile RAM NVR2
Connection assignment
Signal name
Pin
Signal name
A2
A1
A0
D0
D1
D2
GND
28
X2
Pin
1
2
3
4
5
6
7
Signal name
A14/NC
A12
A7
A6
A5
A4
A3
Pin
8
9
10
11
12
13
14
Pin
22
23
24
25
26
27
28
15
Signal name
RD/
A11
A9
A8
A13/NC
WR/
+5 V
15
16
17
18
19
20
21
D3
D4
D5
D6
D7
CS/
A10
X1
1
14
Fig. 0-1:
Connections (the numbering is identical to the assembly
used previously.)
During usage of the assembly, also always pay attention to the reference
documents for the assembly used previously.
Pay attention to ESD protection. Store assembly in the original packaging
and keep away from charged objects, fields and insulators. Prevent elec-
trostatic charges while removing the packaging and while handling the as-
sembly. Work at an ESD-protected workplace with grounding wrist strap
and, if necessary, antistatic gloves.
Ordering information
Assembly Non-volatile RAM NVR2 (part number: 93301494001)
2
Document no.: 94303185191, Version: 29.11.2019, AA01
(Translation of the German version dated 14.10.2019, AA01)
Kiepe Electric GmbH
Kiepe-Platz 1, D-40599 Düsseldorf
+49 (0) 211 / 74 97 – 0
info.kiepe@knorr-bremse.com, www.kiepe.knorr-bremse.com