AT29C020-15 ATMEL Corporation, AT29C020-15 Datasheet
AT29C020-15
Available stocks
Related parts for AT29C020-15
AT29C020-15 Summary of contents
Page 1
... Fast Read Access Time - 90 ns 5-Volt-Only Reprogramming Sector Program Operation Single Cycle Reprogram (Erase and Program) 1024 Sectors (256 bytes/sector) Internal Address and Data Latches for 256-Bytes Internal Program Control and Timer 2-Megabit (256K x 8) 5-volt Only CMOS Flash Memory AT29C020 ...
Page 2
... Description (Continued) To allow for simple in-system reprogrammability, the AT29C020 does not require high input voltages for pro- gramming. Five-volt-only commands determine the opera- tion of the device. Reading data out of the device is similar to reading from an EPROM. Reprogramming the AT29C020 is performed on a sector basis; 256-bytes of data are loaded into the device and then simultaneously programmed ...
Page 3
... These two 8K memory sections are referred to as boot blocks . Secure code which will bring up a system can be contained in a boot block. The AT29C020 blocks are lo- cated in the first 8K bytes of memory and the last 8K bytes of memory. The boot block programming lockout feature can therefore support systems that boot from the lower addresses of memory or the higher addresses ...
Page 4
... MHz OUT -400 -100 4. AT29C020-12 AT29C020 10% 5V 10 OUT High Z High Z ( Manufacturer Code ...
Page 5
... IL may cause the device to read incorrectly. Pin Capacitance ( MHz 25° OUT Note: 1. This parameter is characterized and is not 100% tested. AT29C020-90 AT29C020-10 AT29C020-12 AT29C020-15 Min Max Min Max 0 90 100 90 100 0 40 ...
Page 6
... CS t Chip Select Hold Time CH t Write Pulse Width ( Data Set-up Time Data, OE Hold Time DH OEH t Write Pulse Width High WPH AC Byte Load Waveforms WE Controlled CE Controlled AT29C020 6 Min Max 100 Units ...
Page 7
... WE (or CE must be high when WE and CE are both low. Min 100 ( All bytes that are not loaded within the sector being programmed will be indeterminate. AT29C020 Max Units 150 s ...
Page 8
... Software Protected Program Cycle Waveform Notes through A17 must specify the sector address during each high to low transition of WE (or CE) after the software code has been entered must be high when WE and CE are both low. AT29C020 8 Software Data (1) Protection Disable Algorithm ...
Page 9
... Notes: 1. Toggling either both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. (1) Min 10 10 (2) 0 (1) Min 10 10 (2) 150 0 3. Any address location may be used but the address should not vary. AT29C020 Typ Max Typ Max Units Units ...
Page 10
... Device Code is read for The device does not remain in identification mode if powered down. 4. The device returns to standard operation mode. 5. Manufacturer Code: 1F Device Code: DA AT29C020 10 Boot Block Lockout Feature Enable Algorithm ENTER PRODUCT IDENTIFICATION MODE ( LOAD DATA 00 ADDRESS 00000H ...
Page 11
... AT29C020-12TC 32T AT29C020-12JI 32J AT29C020-12PI 32P6 AT29C020-12TI 32T AT29C020-15JC 32J AT29C020-15PC 32P6 AT29C020-15TC 32T AT29C020-15JI 32J AT29C020-15PI 32P6 AT29C020-15TI 32T Package Type AT29C020 Operation Range Commercial ( Commercial ( Industrial (- Commercial ( Industrial (- ...