cy8c42123 Cypress Semiconductor Corporation., cy8c42123 Datasheet - Page 34

• Manufacturer Part Number: cy8c42123
• Description: Power Psoc? Devices
• Manufacturer: Cypress Semiconductor Corporation.

8.37 2.5V to 3.0V AC External Clock Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 36V
and -40 ° C ≤ T
to 3.0V and -40 ° C ≤ T
25 ° C and are for design guidance only.
8.38 AC Programming Specifications
Document 38-12034 Rev. *C
F
F
–
–
–
T
T
T
T
F
T
T
T
T
T
Parameter
Parameter
OSCEXT
OSCEXT
RSCLK
FSCLK
SSCLK
HSCLK
SCLK
ERASEB
WRITE
DSCLK
DSCLK3
DSCLK2
a. Maximum CPU frequency is 3 MHz at 2.7V. With the CPU clock divider set to 1, the external clock must adhere to
b. If the frequency of the external clock is greater than 12 MHz, the CPU clock divider must be set to 4 or greater. In
the maximum frequency and duty cycle requirements.
this case, the CPU clock divider will ensure that the fifty percent duty cycle requirement is met.
A
Frequency with CPU Clock
divide by 1
Frequency with CPU Clock
divide by 4 or greater
High Period with CPU Clock
divide by 1
Low Period with CPU Clock
divide by 1
Power Up IMO to Switch
Rise Time of SCLK
Fall Time of SCLK
Data Set up Time to Falling Edge
of SCLK
Data Hold Time from Falling
Edge of SCLK
Frequency of SCLK
Flash Erase Time (Block)
Flash Block Write Time
Data Out Delay from Falling
Edge of SCLK
Data Out Delay from Falling
Edge of SCLK
Data Out Delay from Falling
Edge of SCLK
≤ 85 ° C (referred to as 5V operation), 3.0V to 3.6V and -40 ° C ≤ T
A
≤ 85 ° C (referred to as 2.7V operation), respectively. Typical parameters apply to 5V, 3.3V, and 2.7V at
Description
Description
a
PRELIMINARY
b
HV
3.0 ≤ HV
2.5 ≤ HV
dd
> 3.6.
dd
dd
≤ 3.6.
≤ 3.0.
Conditions
Conditions
A
≤ 85 ° C (referred to as 3.3V operation), or 2.5V
0.090
0.180
CY8C42123/CY8C42223
CY8C42323/CY8C42423
Min.
41.7
41.7
Min.
150
40
40
1
1
0
–
–
–
–
–
Typ.
Typ.
20
20
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
5300
Max.
3.12
12.5
20
20
45
50
70
–
–
–
–
8
–
–
Page 34 of 42
Units
Units
MHz
MHz
MHz
ms
ms
ns
ns
µ s
ns
ns
ns
ns
ns
ns
ns