AT27C256R-12RX Atmel, AT27C256R-12RX Datasheet
AT27C256R-12RX
Specifications of AT27C256R-12RX
Related parts for AT27C256R-12RX
AT27C256R-12RX Summary of contents
Page 1
... Commercial, Industrial and Automotive Temperature Ranges Description The AT27C256R is a low-power, high-performance 262,144-bit one-time programma- ble read only memory (OTP EPROM) organized 32K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems ...
Page 2
... The AT27C256R is available in a choice of industry stan- dard JEDEC-approved one time programmable (OTP) plastic DIP, PLCC, SOIC, and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flex- ibility to prevent bus contention. With 32K byte storage capability, the AT27C256R allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media ...
Page 3
Absolute Maximum Ratings* Temperature Under Bias ................................ -55°C to +125°C Storage Temperature ..................................... -65°C to +150°C Voltage on Any Pin with Respect to Ground .........................................-2.0V to +7.0V Voltage on A9 with Respect to Ground ......................................-2.0V to +14.0V V Supply Voltage ...
Page 4
... Max Min Max AT27C256R - 125 C - 125 C 5V 10% 5V 10% Min Max 100 1 20 -0.6 0.8 2 0.5 CC 0.4 2 AT27C256R -70 -90 -12 Min Max Min Max Min Max 70 90 120 70 90 120 - - - 125 C 5V 10% Units µA µA µA µA µA µ and -15 Min Max Units ...
Page 5
AC Waveforms for Read Operation Notes: 1. Timing measurement reference level is 1.5V for -45 and -55 devices. Input AC drive levels are V Timing measurement reference levels for all other speed grades are 0.45V and V ...
Page 6
... Programming Waveforms Notes: 1. The Input Timing Reference is 0.8V for and t are characteristics of the device but must be accommodated by the programmer. OE DFP 3. When programming the AT27C256R a 0.1 µF capacitor is required across V transients. DC Programming Characteristics 5° 6.5 0.25V Symbol Parameter I Input Load Current LI V Input Low Level ...
Page 7
... This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven— see timing diagram. 3. Program Pulse width tolerance is 100 Atmel’s 27C256R Integrated Product Identification Code Codes A0 Manufacturer 0 Device Type ...
Page 8
... CE pulse without verification. Then a verifica- tion/reprogramming loop is executed for each address. In the event a byte fails to pass verification succes- sive 100 s pulses are applied with a verification after each AT27C256R 8 pulse. If the byte fails to verify after 10 pulses have been is applied, the part is considered failed. After the byte verifies ...
Page 9
... Ordering Code AT27C256R-45JC AT27C256R-45PC AT27C256R-45RC AT27C256R-45TC AT27C256R-45JI AT27C256R-45PI AT27C256R-45RI AT27C256R-45TI AT27C256R-55JC AT27C256R-55PC AT27C256R-55RC AT27C256R-55TC AT27C256R-55JI AT27C256R-55PI AT27C256R-55RI AT27C256R-55TI AT27C256R-70JC AT27C256R-70PC AT27C256R-70RC AT27C256R-70TC AT27C256R-70JI AT27C256R-70PI AT27C256R-70RI AT27C256R-70TI AT27C256R-70JA AT27C256R-70PA AT27C256R-70RA Package Type Package Operation Range 32J Commercial 28P6 ( 28R 28T 32J Industrial ...
Page 10
... AT27C256R-90PC AT27C256R-90RC AT27C256R-90TC AT27C256R-90JI AT27C256R-90PI AT27C256R-90RI AT27C256R-90TI AT27C256R-90JA AT27C256R-90PA AT27C256R-90RA AT27C256R-12JC AT27C256R-12PC AT27C256R-12RC AT27C256R-12TC AT27C256R-12JI AT27C256R-12PI AT27C256R-12RI AT27C256R-12TI AT27C256R-12JA AT27C256R-12PA AT27C256R-12RA AT27C256R-15JC AT27C256R-15PC AT27C256R-15RC AT27C256R-15TC AT27C256R-15JI AT27C256R-15PI AT27C256R-15RI AT27C256R-15TI AT27C256R-15JA AT27C256R-15PA AT27C256R-15RA Package Type Package Operation Range 32J Commercial 28P6 ( 28R ...
Page 11
Packaging Information 32J, 32-Lead, Plastic J-Leaded Chip Carrier (PLCC) Dimensions in Inches and (Millimeters) JEDEC STANDARD MS-016 AE .045(1.14) X 45˚ PIN NO. 1 IDENTIFY .553(14.0) .547(13.9) .032(.813) .595(15.1) .026(.660) .585(14.9) .050(1.27) TYP .300(7.62) REF .430(10.9) .390(9.90) AT CONTACT POINTS ...
Page 12
... No licenses to patents or other intellectual prop Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life suppor t devices or systems. ...