ES29LV160F Datasheet, PDF (62/71 Pages) Excel Semiconductor Inc. – 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

ES29LV160F
Excel Semiconductor Inc.
A4. Program Acceleration Mode ( ACC pin )
The device offers accelerated program operations through the ACC function. This function is
primarily intended to allow faster manufacturing throughput at the factory. Programming speed can
be highly accelerated during this mode. Furthermore, Unlock bypass mode is automatically
activated in this mode ( when 12V is applied to ACC pin ). Approximately 40% program time can
be saved with this mode If the system asserts VHH (11.5V~12.5V) on this pin, the device
automatically enters Unlock Bypass mode, temporarily unprotects any protected sectors, and uses
the higher voltage on the pin to reduce the time required for program operations. Only two-cycle
program command sequences are required because the unlock bypass mode is automatically
activated in this acceleration mode. The device returns to the normal operation when VHH is
removed from the ACC pin. It should be noted that the ACC pin must not be at VHH for operations
other than accelerated programming, or device damage may result.
.ACC pin is an extra pin to be used for the accelerated programming operation. However, in case
that users do not want this pin, the ACC pin can be floated or dealt as ‘No Connection (NC)’. This
unique feature of flexible pin connectivity provides easier compatibility and flexibility to a lot of
different users under different system environments.
Table A2. Page program and ACC acceleration program performance
Parameter
Typ
Max
Unit Effective time
Byte Program
5
150
us
Byte Program with ACC
4
120
us
Word Program
7
210
us
Word Program with ACC
Page Program
(t_WHWH3)
Page Program with ACC
4
120
us
170
510
us
5usec/word
70
210
us
2usec/word
Parameter
I_HH
V_HH
Table A3. DC Characteristics for Program Acceleration Mode
Description
Test Condition
Min
Max
Unit
ACC Input Load Current
Voltage for Acceleration
V_CC=V_{CC MAX};ACC=12V
5
12
mA
Vcc = 3.3V
11.5
12.5
V
Rev.0A (Dec 12, 2007) 62