Rainbow Electronics AT90SO4 - Manual (Page 9)

9
AT90SO4
6579A–SMS–29Jan10
V
OL
Output Low Voltage - I/O 0..1
Output Low Voltage - MISO, MOSI
5V, I
OL
= 1mA
3V, I
OL
= 1mA
0
0 0.08*V
CC
0.15*V
CC
V
V
OH
Output High Voltage - I/O 0..1
Output High Voltage - MISO, MOSI
5V, 3V, I
OH
= 1mA
0.7*Vcc
0.7*Vcc Vcc
Vcc
V
R
I/O
Pin Pull-up I/O0, RST, I/O1, MISO,
MOSI
220 KOhm
Table 3. AC Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)
Symbol Parameter Condition Min. Typ. Max. Units
f
CLK
External Clock Frequency 1 5 MHz
f
VFO
Variable Frequency Oscillator (1)
Expected value at 25°C
Clock Jitter not enabled
5V, 3V
28 31 34 MHz
f
VFO
Average
Average Variable Frequency
Oscillator
(2)
Expected value at 25°C
Clock Jitter enabled
5V, 3V
28 MHz
t
EEPROM
EEPROM Write Time (erase+write) 1.6 2 2.4 ms
T
r
I/O Output Rise Time (HRD Mode)
C
out
=30pF
R
pullup
=20kOhm
100 ns
T
f
I/O Output Fall Time
C
out
=30pF
R
pullup
=20kOhm
100 ns
1. Please refer to Application Note “How to estimate a performance of a running code “ TPR0231X for the
dependence on temperature, clock jitter and clock dividers.
Table 4. Security Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)
Symbol Parameter Condition Min. Typ. Max. Units
V
MAX
Voltage Monitor: High Level
Detection
5.5 V
V
MIN
Voltage Monitor: Low Level
Detection Chip trimmed to operate at 5V,
3V
2.7
V
f
MAX
External Frequency Monitor:
High Level Detection Duty cycle = 40% to 60%
Running on External Clock
5 MHz
f
MIN
External Frequency Monitor: Low
Level Detection Duty cycle = 40% to 60%
Running on External Clock
1 MHz
T
MON
Max
Temperature Monitor: High Level
Detection
85 °C
T
MON
Min
Temperature Monitor: Low Level
Detection
-25 °C
Table 2. DC Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)
Symbol Parameter Condition Min. Typ. Max. Units