SH7262/SH7264 Group
Hardware Design Guide
REJ06B0999-0100 Rev. 1.00
Page 3 of 36
Jun. 30, 2010
Table 2 Analog Power Supplies
Symbol Name
Voltage
Range
Description
PLLVcc
PLL power supply
1.1 to 1.3 V
Power supply for internal PLL oscillator
PLLVss
PLL ground
0 V
Ground pin for internal PLL oscillator
USBAPVcc
(2) (4)
Transceiver analog pin
power supply
3.0 to 3.6 V
Power supply for USB pins
USBAPVss
(3) (4)
Transceiver analog pin
ground
0 V
Ground for USB pins
USBAVcc
(1) (4)
Transceiver analog core
power supply
1.1 to 1.3 V
Power supply for USB pins
USBAVss
(3) (4)
Transceiver analog core
ground
0 V
Ground for USB core
AVcc
(5) (7)
Analog power supply
3.0 to 3.6 V
A/D Converter power supply pin
AVss
(5) (7)
Analog ground
0 V
A/D Converter ground pin
AVref
(6) (7)
Analog reference voltage
3.0 to 3.6 V
A/D Converter reference voltage pin
Notes: 1. USBAVcc, USBDVcc, and USBUVcc must be at the same electric potential as the Vcc.
2. USBAPVcc and USBDPVcc must be at the same electric potential as the PVcc.
3. USBAVss, USBDVss, USBUVss, USBAPVss, and USBDPVss must be at the same electric
potential as the Vss.
4. Isolate analog power supplies (USBAVcc, USBAVss, USBAPVcc, and USBAPVss) from the digital
power supplies.
5. AVcc must be set as PVcc
−
0.3 V
≤
AVcc
≤
PVcc. AVss must be at the same electric potential as
the Vss.
Do not open pins AVcc and AVss when not using the A/D Converter, or in software standby mode.
When not using the A/D Converter, connect AVcc to PVcc, and AVss to Vss, respectively.
6. Set the reference voltage range of the AVref pin as 3.0 V
≤
AVref
≤
AVcc.
7. Isolate AVref and AVcc (also A/D Converter analog input pin) from the digital circuit with the AVss.
AVss must be connected on a stable digital ground (Vss) on board.
