Rainbow-electronics AT27BV256 User Manual

1Features•Fast Read Access Time - 70 ns•Dual Voltage Range Operation– Unregulated Battery Power Supply Range, 2.7V to 3.6Vor Standard 5V ± 10% Supply

AT27BV25610Ordering InformationtACC(ns)ICC (mA)Ordering Code Package Operation RangeActive Standby70 8 0.02 AT27BV256-70JCAT27BV256-70RCAT27BV256-70TC

AT27BV25611Packaging Information.045(1.14) X 45˚PIN NO. 1IDENTIFY.025(.635) X 30˚ - 45˚.012(.305).008(.203).021(.533).013(.330).530(13.5).490(12.4).03

© Atmel Corporation 1998.Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standa

AT27BV2562Atmel’s innovative design techniques provide fast speedsthat rival 5V parts while keeping the low power consump-tion of a 3V supply. At VCC

AT27BV2563Note: 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

AT27BV2564Notes: 1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP.2. VPP may be connected direct

AT27BV2565AC Waveforms for Read Operation(1)Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unles

AT27BV2566Input Test Waveform and Measurement LevelOutput Test LoadNote: 1. Typical values for nominal supply voltage. This parameter is only sampled

AT27BV2567Programming Waveforms(1)Notes: 1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH.2. tOE and tDFP are characteristics of the dev

AT27BV2568Notes: 1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.2. This parameter is only sampled and is

AT27BV2569Rapid Programming AlgorithmA 100 µs CE pulse width is used to program. The addressis set to the first location. VCC is raised to 6.5V and VP