SH7710 Datasheet, PDF (372/996 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 11 On-Chip Oscillation Circuits
Pin assignments of P-LFBGA1717-256 (BP-256H/HV)
Vss/VssQ and Vcc/VccQ pair of digital circuitry
D2-B1, E1-F4, G2-G3, J2-J4, L3-L2, N3-N2, R4-P2, U2-W1, V4-Y4, Y6-U7, W8-V8, V10-
W10, V11-W11, V13-W13, U15-W14, W17-Y19, U18-U20, P17-N19, N18-P20, L17-L20,
J18-J19, E20-F17, D19-B20, C19-A20, D15-B14, C14-A15, B11-D11, C10-B10, C8-B8, D6-
B7
Vss/VssQ and Vcc/VccQ pair of the on-chip oscillator
B19-A19, C3-B5, and C5-C4
When Using a PLL Oscillator Circuit: Keep the wiring from the PLL Vcc and PLL Vss
connection pattern to the power supply pins short, and make the pattern width large, to minimize
the inductance component.
Connect the EXTAL pin to VccQ or VssQ and make the XTAL pin open in clock mode 7.
The analog power supply system of the PLL is sensitive to a noise. Therefore the system
malfunction may occur by the intervention with other power supply. Do not supply the analog
power supply with the same resource as the digital power supply of Vcc and VccQ.
Avoid crossing
signal lines
Vcc(PLL2)
Vss(PLL2)
Vcc(PLL1)
Power
Vcc ^supply
Vss
Vss(PLL1)
Figure 11.5 Points for Attention when Using PLL Oscillator Circuit
Rev. 2.00 Dec. 07, 2005 Page 330 of 950
REJ09B0079-0200