HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 1368

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 38
38.2
• Order of turning on 1.5 V power (V
Note: Handling of CA pin
Rev. 3.00 Jan. 18, 2008 Page 1306 of 1458
REJ09B0033-0300
power (V
 First turn on the 3.3 V power and 3.3 V/1.8 V power, then turn on the 1.5 V power within 1
 Until voltage is applied to all power supplies and a low level is input to the RESETP pin,
ms. This interval should be as short as possible. The system design must ensure that the
states of pins or undefined period of an internal state do not cause erroneous system
operation.
internal circuits remain unsettled, and so pin states are also undefined. The system design
must ensure that these undefined states do not cause erroneous system operation.
Waveforms at power-on are shown in the following figure.
Other pins *
The CA pin must be ensured to go high before power is turned on. When it is not ensured,
through current flows to the I/O buffer, etc. and it may cause the LSI damage even if a
clock is not input.
RESETP
Note: * Except power/GND, clock related, and analog pins
Power-On and Power-Off Order
GND
Electrical Characteristics
CC
Q1), and 3.3V power (V
Turn on power while RESETP is low in advance
Pins states undefined
Pins states undefined
t
PWU
t
UNC
CC
CC
Q, V
, V
VccQ, VccQ1, VccQ_RTC, AVcc, AVcc_USB (min.) power
CC
CC
_PLL1, V
_RTC, AV
VccQ1: 1.8 V/3.3V power
VccQ, VccQ_RTC, AVcc, AVcc_USB: 3.3 V power
Vcc/2 level voltage
Vcc, Vcc_PLL1, Vcc_PLL2, Vcc_RTC (min.) voltage
Power-on reset state
Vcc, Vcc_PLL1, Vcc_PLL2, Vcc_RTC: 1.5 V power
CC
Normal operation period
_PLL2, and V
CC
, AV
CC
_USB
CC
_RTC), 1.8 V/3.3 V