Rainbow Electronics ATmega8HVD - Manual (Page 143)

143
8052B–AVR–09/08
ATmega4HVD/8HVD
Notes: 1. All Electrical Characteristics contained in this data sheet are based on initial characterization of actual silicon. These values
are preliminary values.
2. TBD
26.2 Oscillator Characteristics
Notes: 1. Not tested in production.
2. Relevant if regulatoris operated in Force mode.
Voltage
Regulator
Regulated Output Voltage, VREG
(Linear regulation mode)
VFET = 3.0 2.0 2.2 2.4 V
Regulator Output Voltage, VREG
(Force mode) VFET -
V
DROP
V
FORCE
(2) V
Operating Voltage, VFET
Active mode, EEPROM writing 2.3 6.0 V
Active mode, no EEPROM writing 2.1 6.0 V
Regulator Force mode level
(V
FORCE
)
Rising edge 2.50 2.7 V
Falling edge 2.35 2.55 V
Regulator Force level hysteresis 150
mV
Regulator drop in Force mode
(VFET - VREG)
VFET = 2.2V, I
load
= 1 mA 50
Table 26-1. Electrical Characteristics (1) , T
A
= -20°C to 85°C, VFET = 2.4 to 4.2V (unless otherwise noted) (Continued)
Parameter Condition Min Typ Max Unit
Table 2. Oscillator Characteristics, T
A
= -20°C to 85°C, V
CC
= 2.2V (unless otherwise noted)
Parameter Condition Min Typ Max Unit
Slow RC
Oscillator
Frequency 91 131 171 kHz
Frequency Prediction Error (1) 1
%
Frequency drift as function of V
CC
(1)(2)
2.1
≤
V
CC
≤
2.7 4
ULP RC
Oscillator
Frequency 89 128 167 kHz
Fast RC
Oscillator
After initial calibration 1.9 2.0 2.1 MHz
FOSCCAL frequency step size 0.5 1 2 %
Frequency drift as function of V
CC
(1)(2)
2.1
≤
V
CC
≤
2.7, T
A
= 25°C 0.5 %