User manual

CY8C29466, CY8C29566
CY8C29666, CY8C29866
Document Number: 38-12013 Rev. *M Page 35 of 47
12.4.7 AC External Clock Specifications
The following tables list guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40
°C ≤ T
A
≤ 85°C, or 3.0V to 3.6V and -40°C ≤ T
A
≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only.
12.4.8 AC 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 ≤ T
A
≤ 85°C, or 3.0V to 3.6V and -40°C ≤ T
A
≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only.
Table 12-25. 5V AC External Clock Specifications
Symbol Description Min Typ Max Unit
F
OSCEXT
Frequency 0.093 – 24.6 MHz
– High Period 20.6
– 5300 ns
– Low Period 20.6
– –ns
– Power Up IMO to Switch 150
– –ms
Table 12-26. 3.3V AC External Clock Specifications
Symbol Description Min Typ Max Unit
F
OSCEXT
Frequency with CPU Clock divide by 1 0.093 – 12.3 MHz
F
OSCEXT
Frequency with CPU Clock divide by 2 or greater 0.186 – 24.6 MHz
– High Period with CPU Clock divide by 1 41.7
– 5300 ns
– Low Period with CPU Clock divide by 1 41.7
– –ns
– Power Up IMO to Switch 150
– – μs
Table 12-27. AC Programming Specifications
Symbol Description Min Typ Max Unit Notes
T
RSCLK
Rise Time of SCLK 1 – 20 ns
T
FSCLK
Fall Time of SCLK 1 – 20 ns
T
SSCLK
Data Set up Time to Falling Edge of SCLK 40 – – ns
T
HSCLK
Data Hold Time from Falling Edge of SCLK 40 – – ns
F
SCLK
Frequency of SCLK 0 – 8 MHz
T
ERASEB
Flash Erase Time (Block) – 10 – ms
T
WRITE
Flash Block Write Time – 40 – ms
T
DSCLK
Data Out Delay from Falling Edge of SCLK – – 45 ns Vdd > 3.6
T
DSCLK3
Data Out Delay from Falling Edge of SCLK – – 50 ns 3.0 ≤ Vdd ≤ 3.6
T
ERASEALL
Flash Erase Time (Bulk) – 80 – ms Erase all Blocks and
protection fields at once
T
PROGRAM_HOT
Flash Block Erase + Flash Block Write Time – – 100
[14]
ms 0°C ≤ Tj ≤ 100°C
T
PROGRAM_COLD
Flash Block Erase + Flash Block Write Time – – 200
[14]
ms -40°C ≤ Tj ≤ 0°C
Note
14. 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.
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