AT27BV1024-90JU

The Atmel AT27BV1024 is a high-performance, low-power, low-voltage, 1,048,576-bit, one-time programmable, read-only memory (OTP EPROM) organized as 64K by 16 bits. It requires only one supply in the range of 2.7V to 3.6V in normal read mode operation. The x16 organization makes this part ideal for portable and handheld 6- and 32-bit microprocessor-based systems using either regulated or unregulated battery power. The Atmel innovative design techniques provide fast speeds that rival 5V parts, while keeping the low power consumption of a 3V supply. At VCC = 2.7V, any word can be accessed in less than 90ns. With a typical power dissipation of only 18mW at 5MHz and VCC = 3V, the AT27BV1024 consumes less than one-fifth the power of a standard, 5V EPROM. Standby mode supply current is typically less than 1μA at 3V. The AT27BV1024 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation. The AT27BV1024 is available in an industry-standard, JEDEC-approved, one-time programmable (OTP) PLCC package. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. The AT27BV1024 operating with VCC at 3.0V produces TTL-level outputs that are compatible with standard TTL logic devices operating at VCC = 5.0V. At VCC = 2.7V, the part is compatible with JEDEC-approved, low-voltage battery operation (LVBO) interface specifications. The device is also capable of standard, 5V operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3V and 5V hosts. The AT27BV1024 has additional features to ensure high quality and efficient production use. The rapid programming algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 µs/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 algorithms and voltages. The AT27BV1024 programs in exactly the same way as a standard, 5V Atmel AT27C1024, and uses the same programming equipment.

Key features

• Fast read access time – 90ns
• Dual voltage range operation – Unregulated battery power supply range, 2.7V to 3.6V, or – Standard power supply range, 5V ± 10%
• Pin compatible with JEDEC standard Atmel AT27C1024
• Low-power CMOS operation – 20μA max standby (less than 1μA, typical) for VCC = 3.6V – 36mW max active at 5MHz for VCC = 3.6V
• JEDEC standard surface mount package – 44-lead PLCC
• High-reliability CMOS technology – 2,000V ESD protection – 200mA latchup immunity
• Rapid programming algorithm – 100µs/word (typical)
• CMOS- and TTL-compatible inputs and outputs – JEDEC standard for LVTTL and LVBO
• Integrated product identification code
• Industrial temperature range