September 18, 2006 Document No. 001-05356 Rev. *B 16
CY8C20234, CY8C20334, CY8C20434 Final Data Sheet 2. Electrical Specifications
2.4 AC Electrical Characteristics
2.4.1 AC Chip-Level 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, 3.0V to 3.6V and -40°C ≤ T
A
≤ 85°C, or 2.4V to 3.0V and -40°C ≤ T
A
≤ 85°C, respectively. Typical parameters
apply to 5V, 3.3V, or 2.7V at 25°C and are for design guidance only.
Table 2-10. 5V and 3.3V AC Chip-Level Specifications
Symbol Description Min Typ Max Units Notes
F
CPU1
CPU Frequency (3.3V Nominal) 0.75 – 12.6 MHz 12 MHz only for SLIMO Mode = 0.
F
32K1
Internal Low Speed Oscillator Frequency 15 32 64 kHz
F
IMO12
Internal Main Oscillator Stability for 12 MHz
(Commercial Temperature)
a
a. 0 to 70 °C ambient, Vdd = 3.3 V.
11.4 12 12.6 MHz Trimmed for 3.3V operation using factory
trim values.
See Figure 2-1b, SLIMO Mode = 0.
F
IMO6
Internal Main Oscillator Stability for 6 MHz
(Commercial Temperature)
5.70 6.0 6.30 MHz Trimmed for 3.3V operation using factory
trim values.
See Figure 2-1b, SLIMO Mode = 1.
DC
IMO
Duty Cycle of IMO 40 50 60 %
T
RAMP
Supply Ramp Time 0 – – µs
Table 2-11. 2.7V AC Chip-Level Specifications
Symbol Description Min Typ Max Units Notes
F
CPU1
CPU Frequency (2.7V Nominal) 0.75 – 3.25 MHz
F
32K1
Internal Low Speed Oscillator Frequency 8 32 96 kHz
F
IMO12
Internal Main Oscillator Stability for 12 MHz
(Commercial Temperature)
a
a. 0 to 70 °C ambient, Vdd = 3.3 V.
11.0 12 12.9 MHz Trimmed for 2.7V operation using factory
trim values.
See Figure 2-1b, SLIMO Mode = 0.
F
IMO6
Internal Main Oscillator Stability for 6 MHz
(Commercial Temperature)
5.60 6.0 6.40 MHz Trimmed for 2.7V operation using factory
trim values.
See Figure 2-1b, SLIMO Mode = 1.
DC
IMO
Duty Cycle of IMO 40 50 60 %
T
RAMP
Supply Ramp Time 0 – – µs
