MC34825EPR2 Freescale Semiconductor, MC34825EPR2 Datasheet - Page 25

• Manufacturer Part Number: MC34825EPR2
• Description: IC USB MINI UNIV CHARGING 20QFN
• Manufacturer: Freescale Semiconductor
• Type: USB Interface ICr

Specifications of MC34825EPR2

• Controller Type: USB Peripheral Controller
• Interface: Micro-USB
• Voltage - Supply: 2.7 V ~ 5.5 V
• Current - Supply: 100mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-UFQFN Exposed Pad
• Usb Version: 2.0
• No. Of Ports: 1
• Supply Voltage Range: 2.7V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• No. Of Pins: 20
• Msl: MSL 3 - 168 Hours
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

reset caused by the VDDIO input or by the I
belongs to system resets.
shown in
I
hardware reset is generated. The result of the reset is same
as a Power-On-Reset.
VDDIO pin are shown in
a deglitch-time t
duration less than the deglitch time will be ignored. If the
pulse on the VDDIO lasts longer than the deglitch time, a
reset from the VDDIO is detected to generate a reset signal.
interrupt at the INT pin to the host IC. They are accessory
attachment, accessory detachment, short-key press, long
Analog Integrated Circuit Device Data
Freescale Semiconductor
2
C_SDA have a negative pulse with time of t
The hardware reset condition using the I
The operating waveforms of the hardware reset using the
There are eight interrupt sources in the 34825 causing an
Figure
VDDIODGT_F
20. When both the I
I2C_SDA
I2C_SCL
Reset
VDDIO
Reset
Figure
. A glitch on the VDDIO with
I
I
2
VDD
VDDIO
21. The VDDIO detection has
2
C_SDA
C_SCL
2
Figure 21. Hardware Reset Using the VDDIO Input
C_SCL and the
Figure 20. Hardware Reset Using the I
2
2
Condition
C signals is
Figure 19. Sources of Reset in 34825
V
Detection
C bus lines
Detection
RSTI2C
Reset
I
VDDIO
VDDPOR
2
Reset
Reset
C-Bus
, a
+
-
8.8~13.5ms
t
INTERRUPT
VDDIODGT_F
Condition
Start
To effectively reset the 34825, the reset pulse from the
VDDIO needs be longer than the 150 μs minimum reset
pulse width given in the
table.
SOFTWARE RESET
reset has another reset source, the software reset by writing
‘1’ to the RESET bit in the Control register. The Reset bit will
be cleared to ‘0’ at once since it is of W/C type. The
consequence of the software reset is the same as the
hardware reset. All registers will be reset.
key press, long-pressed key release, VBUS voltage OVP, the
IC temperature OTP, and either the OVP or the OTP
condition is removed. The 34825 detects each event and sets
Delay
Time
In addition to the two hardware reset types, the system
2
C Bus
Dynamic Electrical Characteristics
FUNCTIONAL DEVICE OPERATION
reset
LOGIC CONTROL FEATURES
Condition
Stop
34825
25