M67201A/M67202A
512 ꢀ 9 & 1 K ꢀ 9 CMOS Parallel FIFO
Introduction
The M67201A/202A implement a first-in first-out Using an array of eigh transistors (8 T) memory cell and
algorithm, featuring asynchronous read/write operations. fabricated with the state of the art 1.0 µm lithography
The FULL and EMPTY flags prevent data overflow and named SCMOS, the M 67201A/202A combine an
underflow. The Expansion logic allows unlimited extremely low standby supply current (typ = 1.0
µA) with
expansion in word size and depth with no timing fast access time at 25 ns over the full temperature range.
a
penalties. Twin address pointers automatically generate All versions offer battery backup data retention capability
internal read and write addresses, and no external address with a typical power consumption at less than 5 µW.
information are required for the TEMIC FIFOs. Address
pointers are automatically incremented with the write pin
For military/space applications that demand superior
levels
of
performance
and
reliability
the
and read pin. The 9 bits wide data are used in data
communications applications where a parity bit for error
checking is necessary. The Retransmit pin reset the Read
pointer to zero without affecting the write pointer. This is
very useful for retransmitting data when an error is
detected in the system.
M 67201A/202A is processed according to the methods
of the latest revision of the MIL STD 883 (class B or S)
and/or ESA SCC 9000.
Features
D First-in first-out dual port memory
D 512 × 9 organisation (M 67201A)
D 1024 × 9 organisation (M 67202A)
D Fast access time
D Asynchronous read/write operations
D Empty, full and half flags in single device mode
D Retransmit capability
D Bi-directional applications
20*, 25, 35, 45, 55 ns, commercial, industrial and
automotive
D Battery back-up operation : 2 V data retention
D TTL compatible
20*, 25, 30, 40, 50 ns, military
D Wide temperature range :
D Single 5 V ± 10 % Power Supply (1)
D High performance SCMOS technology
– 55°C to + 125°C
(1) 3.3 V versions are also available. Please consult sales.
D 67201AL/202AL low power 67201AV/202AV very low
power
D Fully expandable by word width or depth
* Preview. Please Consult Sales.
MATRA MHS
1
Rev. D (11 April. 97)