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Am50DL128CH Product Overview
Stacked Multi-Chip Package
(MCP) Flash Memory and SRAM
Two Am29DL640G 64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous
Operation Flash Memories and 64 Mbit (4 M x 16-Bit) Pseudo Static RAM with
Page Model
General Description
The Am29DL640H is a 64 megabit, 3.0 volt-only flash memory device,
organized as 4,194,304 words of 16 bits each. Word mode data appears
on DQ15–DQ0. The device is designed to be programmed in-system
with the standard 3.0 volt VCC supply, and can also be programmed
in standard EPROM programmers.
The device is available with an access time of 55, 70 or 85 ns and
is offered in a 88-ball FBGA package. Standard control pins—chip
enable (CE#f), write enable (WE#), and output enable (OE#)—control
normal read and write operations, and avoid bus contention issues.
The device requires only a single 3.0 volt power supply for both
read and write functions. Internally generated and regulated voltages
are provided for the program and erase operations.
Distinctive Characteristics
- MCP Features
- Power supply voltage of 2.7 to 3.3 volt
- High performance
- Access time as fast as 55 ns
- Package
- Operating Temperature
Flash Memory Features
Architectural Advantages
- Simultaneous Read/Write operations
- Data can be continuously read from one bank while executing
erase/program functions in another bank.
- Zero latency between read and write operations
- Flexible Bankä architecture
- Read may occur in any of the three banks not being written
or erased.
- Four banks may be grouped by customer to achieve desired
bank divisions.
- Manufactured on 0.13 µm process technology
- SecSi™ (Secured Silicon) Sector: Extra 256 Byte sector
- Factory locked and identifiable: 16 bytes available for
secure, random factory Electronic Serial Number; verifiable
as factory locked through autoselect function. ExpressFlash
option allows entire sector to be available for factory-secured
data
- Customer lockable: Sector is one-time programmable. Once
sector is locked, data cannot be changed.
- Zero Power Operation
- Sophisticated power management circuits reduce power consumed
during inactive periods to nearly zero.
- Boot sectors
- Top and bottom boot sectors in the same device
- Compatible with JEDEC standards
- Pinout and software compatible with single-power-supply
flash standard
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Performance Characteristics
- High performance
- Access time as fast as 55 ns
- Program time: 4 µs/word typical utilizing Accelerate
function
- Ultra low power consumption (typical values)
- 32 mA active read current at 1 MHz
- 10 mA active read current at 5 MHz
- 200 nA in standby or automatic sleep mode
- Minimum 1 million write cycles guaranteed per sector
- 20 year data retention at 125°C
- Reliable operation for the life of the system
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Software
Features
- Data Management Software (DMS)
- AMD-supplied software manages data programming, enabling
EEPROM emulation
- Eases historical sector erase flash limitations
- Supports Common Flash Memory Interface (CFI)
- Program/Erase Suspend/Erase Resume
- Suspends program/erase operations to allow programming/erasing
in same bank
- Data# Polling and Toggle Bits
- Provides a software method of detecting the status of program
or erase cycles
- Unlock Bypass Program command
- Reduces overall programming time when issuing multiple program
command sequences
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Hardware
Features
- Any combination of sectors can be erased
- Ready/Busy# output (RY/BY#)
- Hardware method for detecting program or erase cycle completion
- Hardware reset pin (RESET#)
- Hardware method of resetting the internal state machine
to the read mode
- WP#/ACC input pin
- Write protect (WP#) function protects sectors 0, 1, 140,
and 141, regardless of sector protect status
Acceleration (ACC) function accelerates program timing
- Sector protection
- Hardware method of locking a sector, either in-system or
using programming equipment, to prevent any program or erase
operation within that sector
- Temporary Sector Unprotect allows changing data in protected
sectors in-system
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pSRAM Features
- Power dissipation
- Operating: 50 mA maximum
- Standby: 100 µA maximum
- Deep power-down standby: 5 µA
- CE1s# and CE2s Chip Select
- Power down features using CE1s# and CE2s
- Data retention supply voltage: 2.7 to 3.3 volt
- Byte data control: LB#s (DQ7–DQ0), UB#s
(DQ15–DQ8)
- 8-word page mode access
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