Electrical Specifications
81
November 2002 − Revised January 2005 SPRS205D
5.2 Recommended Operating Conditions
5.2.1 Recommended Operating Conditions for CV
DD
= 1.2 V (108 MHz)
MIN NOM MAX UNIT
Core
CV
DD
Device supply voltage 1.14 1.2 1.26 V
Peripherals
RCV
DD
RTC module supply voltage, core 1.14 1.2 1.26 V
RDV
DD
RTC module supply voltage, I/O (RTCINX1 and RTCINX2) 1.14 1.2 1.26 V
USBPLLV
DD
USBPLL supply voltage
†
1.14 1.2 1.26 V
USBV
DD
USB module supply voltage, I/O (DP, DN, and PU) 3 3.3 3.6 V
DV
DD
Device supply voltage, I/O (except DP, DN, PU, SDA, SCL)
‡
2.7 3.3 3.6 V
ADV
DD
A/D module digital supply voltage 2.7 3.3 3.6 V
AV
DD
A/D module analog supply voltage 2.7 3.3 3.6 V
Grounds
V
SS
Supply voltage, GND, I/O, and core 0 V
ADV
SS
Supply voltage, GND, A/D module, digital 0 V
AV
SS
Supply voltage, GND, A/D module, analog 0 V
USBPLLV
SS
Supply voltage, GND, USBPLL 0 V
DN and DP
§
2.0
V
High-level input voltage, I/O
SDA & SCL: V
DD
related input
levels
‡
0.7*DV
DD
DV
DD
(max) +0.5
V
High-level input voltage, I/O
All other inputs
(including hysteresis inputs)
2.0 DV
DD
+ 0.3
DN and DP
§
0.8
V
Low-level input voltage, I/O
SDA &SCL: V
DD
related input
levels
‡
−0.5 0.3 * DV
DD
V
Low-level input voltage, I/O
All other inputs
(including hysteresis inputs)
−0.3 0.8
V
hys
Hysteresis level Inputs with hysteresis only 0.1*DV
DD
V
High-level output current
DN and DP
§
(V
OH
= 2.45 V) −17.0
OH
High-level output current
All other outputs −4
DN and DP
§
(V
OL
= 0.36 V) 17.0
I
Low-level output current
SDA and SCL
‡
3
mA
All other outputs 4
T
C
Operating case temperature −40 85
_C
†
USB PLL is susceptible to power supply ripple. The maximum allowable supply ripple is 1% for 1 Hz to 5 kHz; 1.5% for 5 kHz to 10 MHz; 3%
for 10 MHz to 100 MHz, and less than 5% for 100 MHz or greater.
‡
The I
2
C pins SDA and SCL do not feature fail-safe I/O buffers. These pins could potentially draw current when the device is powered down.
Due to the fact that different voltage devices can be connected to the I
2
C bus, the level of logic 0 (low) and logic 1 (high) are not fixed and
depends on the associated V
DD
.
§
USB I/O pins DP and DN can tolerate a short circuit at D+ and D− to 0 V or 5 V, as long as the recommended series resistors (see Figure 5−42)
are connected between the D+ and DP (package), and the D− and DN (package). Do not apply a short circuit to the USB I/O pins DP and DN
in absence of the series resistors.
