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PDF SAE81C52 Data sheet ( Hoja de datos )
| Número de pieza | SAE81C52 | |
| Descripción | 256 x 8-Bit Static CMOS RAM NMOS-Compatible | |
| Fabricantes | Siemens Semiconductor | |
| Logotipo |  |
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256 x 8-Bit Static CMOS RAM
NMOS-Compatible
Preliminary DataCMOS IC
SAE 81C52
PFeatures
www.DataSheeqt4U.2co5m6 x 8-bit organization
q Standby mode
q Compatible with the NMOS and CMOS versions
of the microprocessor/microcontroller families
SAB 8086, SAB 8051
q Very low power dissipation
q Data retention up to VDD ≥ 1 V
q Three different chip select inputs for two chip
select modes
q No increasing power consumption in standby mode
if the control inputs are on undefined potential
q Temperature range – 40 to 110 °C
P-DIP-16-1
P-DSO-20-1
Type
SAE 81C52 P
SAE 81C52 G
Ordering Code
Q67100-H9017
Q67100-H9015
Package
P-DIP-16-1
P-DSO-20-1 (SMD)
The SAE 81C52 is a CMOS-silicon gate, static random access memory (RAM),
organized as 256 words by 8 bits. The multiplexed address and data bus interfaces
directly to 8-bit microprocessors/microcontrollers without any timing or level problems,
e.g. the families SAB 8086, SAB 8051.
All inputs and outputs are fully compatible with NMOS circuits, except CS1. Data
retention is ensured up to VDD ≥ 1.0 V. The SAE 81C52 has three different inputs for two
chip select modes which allow to inhibit either the address/data lines (AD 0 … AD 7) and
the control lines (WR, RD, ALE, CS2, CS3), or only the control lines RD, WR.
The power consumption is max. 5.5 µW in standby mode and max. 16.5 mW in
operation. In standby mode, the power consumption will not increase if the control inputs
are on undefined potential.
Semiconductor Group
1
09.94
1 page  
SAE 81C52
www.DataSheet4U.com
Logic Symbol
Truth Table
CS1
L
H
H
H
H
H
CS2 CS3 ALE RD
****
XXHH
HL L L
HL L H
L XL X
XHL X
WR AD0 … AD7
Function
* Floating (tristate)
Standby
H Addresses to memory Store addresses
H Data from memory
Read
L Data to memory
Write
X Floating (tristate)
None
X Floating (tristate)
None
*: Level = VSS … VDD
X: Level = low or high
Semiconductor Group
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SAE81C52.PDF ] | |
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