AT27BV800

Features:

• Read Access Time - 120 ns
• Word-wide or Byte-wide Configurable
• Dual Voltage Range Operation
  Unregulated Battery Power Supply Range, 2.7V to 3.6V or Standard 5V ± 10% Supply Range
• 8-Megabit Flash and Mask ROM Compatable
• Low Power CMOS Operation
  20 A Maximum Standby
  10 mA Max. Active at 5 MHz for V_CC = 3.6V
• JEDEC Standard Packages
  44-Lead PLCC
  44-Lead SOIC (SOP)
  48-Lead TSOP (12 mm x 20 mm)
• High Reliability CMOS Technology
  2,000 ESD Protection
  200 mA Latchup Immunity
• Rapid™ Programming Algorithm - 50 s/word (typical)
• CMOS and TTL Compatible Inputs and Outputs
  JEDEC Standard for LVTTL and LVBO
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges


Pinout




Specifications

Temperature Under Bias................................ -55°C to +125°
Storage Temperature ..................................... -65°C to +150°C
Voltage on Any Pin with
with Respect to Ground ..................................-2.0V to +7.0V₍₁₎
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V₍₁₎
VPP Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V₍₁₎
C *NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Note: 1. Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is Vcc + 0.75V DC which may overshoot to + 7.0V for pulses of less than 20 ns.



Description

The AT27BV800 is a high performance low-power, low-voltage 8,388,608-bit one time programmable read only memory (OTP EPROM) organized as either 512K by 16 or 1024K by 8 bits. It requires only one supply in the range of 2.7 to 3.6V in normal read mode operation. The x16 organization makes this part ideal for portable and hand held 16- and 32-bit microprocessor based systems using either regulated or unregulated battery power.

Atmel's innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At V_CC = 2.7V, any word can be accessed in less than 120ns. With a typical power dissipation of only 10 mW at 5mHZ and V_CC = 3V, the AT27BV800 consumes less than one fifth the power of a standard 5V EPROM.

Standby mode supply current is typically less than 1 mA at 3V. The AT27BV800 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation.

The AT27BV800 can be organized as either word-wide or byte-wide. The organization is selected via the BYTE/V_PP pin. When BYTE/V_PP is asserted high (V_IH), the word-wide organization is selected and the O15/A-1 pin is used for O15 data output. When BYTE/V_PP is asserted low (V_IL),the byte wide organization is selected and the O15/A-1 pin is used for the address pin A-1. When the AT27BV800 is logically regarded as x16 (word-wide), but read in the bytewide mode, then with A-1=V_IL the lower eight bits of the 16 bit word are selected with A-1 =V_IH the upper 8 bits of the 16-bit word are selected.

The AT27BV800 is available in industry standard JEDECapproved one-time programmable (OTP) PLCC, SOIC (SOP), and TSOP packages. The device features two-line control(CE,OE) to eliminate bus contention in high-speed systems.

With high density 512K word or 1024K-bit storage capability, the AT27BV800 allows firmware to be to be stored reliably and to be accessed by the system without the delays of mass storage media.

The AT27BV800 operating with V_CC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at V_CC = 5V. At V_CC = 2.7V, the part is compatible with JEDEC approved low voltage battery operation (LVBO) interface specifications. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts.

Atmel's AT27BV800 has additional features that ensure high quality and efficient production use. The Rapid^TM Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 50s/word. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming equipment and voltages. The AT27BV800 programs exactly the same way as a standard 5V AT27C800 and uses the same programming equipment.