HYE18P32160AC Datasheet, PDF (9/53 Pages) Infineon Technologies AG – 32M Synchronous Burst CellularRAM

HYE18P32160AC(-/L)9.6/12.5/15
32M Synchronous Burst CellularRAM
Overview
1.2
General Description
The 32M Synchronous Burst CellularRAM (CellularRAM) is designed to meet the growing memory density and
bandwidth demand in 3G cellular phone designs. Its high density 1T1C-cell concept, the multi-protocol interface
capabilities, its highly optimized low power design and its refresh-free operation make the CellularRAM the perfect
fit for 3G baseband applications.
Configured in synchronous burst mode, a peak bandwidth of > 200 Mbyte/s is achieved at the max. clock rate of
104 MHz. The burst length can be programmed and set to either fixed burst lengths of 4, 8- or 16-words¹⁾ or set
to continuous mode. The 16-word burst mode is specially designed for cached processor designs to speed up
cache re-fill operations.
In NOR-Flash, burst mode read accesses are synchronous whereas write accesses are of asynchronous nature.
This is to retain compatibility to today’s NOR-Flash protocols and thus to make sure that existing baseband
designs do get instantly a performance gain in read direction by deploying the NOR-Flash burst protocol. The
different access protocols that are supported by the CellularRAM are illustrated in Figure 1. Data byte control (UB,
LB) is featured in all modes and provides dedicated lower and upper byte access.
Protocols:
Read:
Write:
Async/ Page
Async
/CS
/WE
/OE
SRAM I/F
32Mb
CellularRAM
(FBGA-54)
Sync. Burst
Async w/ ADR Latch
/CS
CLK
/WE
/ADV
/OE
WAIT
NOR-Flash I/F
32Mb
CellularRAM
(FBGA-54)
Sync Burst
Sync Burst
/CS
CLK
/WE
/ADV
/OE
WAIT
Sync. I/F
32Mb
CellularRAM
(FBGA-54)
Pinning:
/CS
/WE
/OE
/UB
/LB
CRE
A20-A0
32Mb
CellularRAM
(FBGA-54)
DQ15-DQ0
CLK
/ADV
/CS
/WE
/OE
/UB
/LB
CRE
A20-A0
32Mb
CellularRAM
(FBGA-54)
DQ15-DQ0
WAIT
Asynchronous I/F
CLK=/ADV=Low and WAIT ignored in Asynchronous I/F
Sync. Burst I/F
& NOR-Flash Burst
& Asynchronous I/F
Figure 1 CellularRAM - Interface Configuration Options
The CellularRAM can be operated from a single 1.8 V power supply feeding the core and the output drivers. The
chip is fabricated in Infineon Technologies advanced low power 0.14 µm process technology and comes in a
P-VFBGA-54 package.
1) 1 word is equal 16 bits
Data Sheet
9
V2.0, 2003-12-16