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PDF W19B160BT Data sheet ( Hoja de datos )
| Número de pieza | W19B160BT | |
| Descripción | CMOS flash memory | |
| Fabricantes | Winbond | |
| Logotipo |  |
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W19B160BT/B DATA SHEET
-Table of Contents-
1.
2.
www.DataSheet4U.com3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................... 4
FEATURES ................................................................................................................................. 4
PIN CONFIGURATIONS ............................................................................................................ 6
BLOCK DIAGRAM ...................................................................................................................... 7
PIN DESCRIPTION..................................................................................................................... 8
FUNCTIONAL DESCRIPTION ................................................................................................... 9
6.1 DEVICE BUS OPERATION............................................................................................ 9
6.1.1 Word/Byte Configuration...................................................................................................9
6.1.2 Reading Array Data ..........................................................................................................9
6.1.3 Writing Commands/Command Sequences.......................................................................9
6.1.4 Program and Erase Operation Status...............................................................................9
6.1.5 Standby Mode ..................................................................................................................9
6.1.6 Automatic Sleep Mode ...................................................................................................10
6.1.7 #RESET: Hardware Reset Pin........................................................................................10
6.1.8 Output Disable Mode......................................................................................................10
6.1.9 Auto-select Mode............................................................................................................10
6.1.10 Sector Protection and Un-protection.............................................................................11
6.1.11 Temporary Sector Unprotect ........................................................................................11
6.1.12 Hardware Data Protection ............................................................................................11
6.1.13 Write Pulse “Glitch” Protection......................................................................................11
6.1.14 Logical Inhibit................................................................................................................11
6.1.15 Power-Up Write Inhibit..................................................................................................11
6.2 COMMAND DEFINITIONS ........................................................................................... 12
6.2.1 Reading Array Data ........................................................................................................12
6.2.2 Reset Command.............................................................................................................12
6.2.3 Auto-select Command Sequence ...................................................................................12
6.2.4 Byte/Word Program Command Sequence......................................................................13
6.2.5 Chip Erase Command Sequence ...................................................................................13
6.2.6 Sector Erase Command Sequence ................................................................................13
6.2.7 Erase Suspend /Erase Resume Commands ..................................................................14
6.2.8 Unlock Bypass Command Sequence .............................................................................14
6.3 WRITE OPERATION STATUS..................................................................................... 15
6.3.1 DQ7: #Data Polling.........................................................................................................15
6.3.2 RY/#BY: Ready/#Busy....................................................................................................15
Publication Release Date:Jan.04, 2008
- 1 - Revision A5
1 page  
W19B160BT/B DATA SHEET
− Software method: Toggle bit/Data polling
• Erase Suspend /Erase Resume
− Suspend an erase operation to read data or program data.
− Resume erase suspend operation.
• Unlock bypass program command
− Allows the system to program bytes or words to device faster than standard program command.
www.DataSheet4U.comHardware Features
• Ready/#Busy output (RY/#BY)
− Detect program or erase cycle completion
• Hardware reset pin (#RESET)
− Reset the internal state machine to the read mode
• Sector Protection
− Sectors can be locked in-system or via programmer
− Temporary Sector Unprotect allows changing data in protected sectors in-system
Temperature range
• Extended temperature range (-20℃ to 85 ℃)
• Industrial devices ambient temperature(-40℃ to +85℃)
Publication Release Date:Jan.04, 2008
- 5 - Revision A5
5 Page 
W19B160BT/B DATA SHEET
To access the auto select codes in-system, the host system can issue the auto select command
through the command register. This method does not require VID. Also refer to the auto select
Command Sequence section for more information.
6.1.10 Sector Protection and Un-protection
The sector protection feature will disable both program and erase operations in any sectors. The
sector un-protection feature will re-enables both program and erase operations in previously protected
www.DataSheet4U.comsectors. Sector protection / un-protection can be implemented through two methods.
The primary method requires VID on the #RESET pin, and can be implemented either in-system or
through programming equipment. This method uses standard microprocessor bus cycle timing.
The alternate method intended only for programming equipment requires VID on address pin A9 and
#OE It is possible to determine whether a sector is protected or unprotected. See the auto select
Mode section for details.
6.1.11 Temporary Sector Unprotect
This feature allows temporary un-protection of previously protected sectors to change data in-system.
When the #RESET pin is set to VID, the Sector Unprotect mode is activated. During this mode,
formerly protected sectors can be programmed or erased by selecting the sector addresses. What if
VID is removed from the #RESET pin, all the previously protected sectors are protected again.
6.1.12 Hardware Data Protection
The command sequence requirements of unlock cycles for programming or erasing provides data
protection against negligent writes. In addition, the following hardware data protection measures
prevent inadvertent erasure or programming, which might be caused by spurious system level signals
during VDD power-up and power-down transitions, or from system noise.
6.1.13 Write Pulse “Glitch” Protection
Noise pulses, which is less than 5nS (typical) on #OE, #CE or #WE, do not initiate a write cycle.
6.1.14 Logical Inhibit
Write cycles are inhibited by holding any one of #OE = VIL, #CE = VIH or #WE = VIH. #CE and #WE
must be a logical zero while #OE is a logical one to initiate a write cycle.
6.1.15 Power-Up Write Inhibit
During power up, if #WE = #CE = VIL and #OE = VIH, the device does not accept commands on the
rising edge of #WE. The internal state machine is automatically reset to the read mode on power-up.
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Publication Release Date:Jan.04, 2008
Revision A5
11 Page | ||
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