CY8C21x34 Final Data Sheet
3. Electrical Specifications
3.3.8
DC Programming Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C ≤ TA ≤ 85°C, 3.0V to 3.6V and -40°C ≤ TA ≤ 85°C, or 2.4V to 3.0V and -40°C ≤ TA ≤ 85°C, respectively. Typical parameters
apply to 5V, 3.3V, or 2.7V at 25°C and are for design guidance only.
Table 3-14. DC Programming Specifications
Symbol
Vdd
Description
Min
2.70
Typ
Max
Units
Notes
Supply Voltage for Flash Write Operations
Supply Current During Programming or Verify
Input Low Voltage During Programming or Verify
Input High Voltage During Programming or Verify
–
5
–
–
–
–
V
IWRITE
DDP
I
–
25
0.8
–
mA
V
V
ILP
V
IHP
–
2.2
–
V
I
Input Current when Applying Vilp to P1[0] or P1[1] During
Programming or Verify
0.2
mA
Driving internal pull-down resistor.
Driving internal pull-down resistor.
ILP
I
Input Current when Applying Vihp to P1[0] or P1[1] During
Programming or Verify
–
–
1.5
mA
IHP
V
V
Output Low Voltage During Programming or Verify
Output High Voltage During Programming or Verify
–
–
–
Vss + 0.75
Vdd
V
V
OLV
Vdd - 1.0
OHV
Flash
Flash
Flash
Flash Endurance (per block)
50,000
1,800,000
10
–
–
–
–
–
–
–
Erase/write cycles per block.
Erase/write cycles.
ENPB
ENT
DR
a
–
Flash Endurance (total)
Flash Data Retention
Years
a. A maximum of 36 x 50,000 block endurance cycles is allowed. This may be balanced between operations on 36x1 blocks of 50,000 maximum cycles each, 36x2 blocks of
25,000 maximum cycles each, or 36x4 blocks of 12,500 maximum cycles each (to limit the total number of cycles to 36x50,000 and that no single block ever sees more than
50,000 cycles).
For the full industrial range, the user must employ a temperature sensor user module (FlashTemp) and feed the result to the temperature argument before writing. Refer to
the Flash APIs Application Note AN2015 at http://www.cypress.com under Application Notes for more information.
January 12, 2007
Document No. 38-12025 Rev. *K
23
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