Datasheet

Section 1 Overview
Rev. 3.00 Mar 17, 2006 page 13 of 926
REJ09B0283-0300
1.3.3 Pin Functions
Table 1.2 Pin Functions
Pin No.
Type Symbol
FP-144G
(H8S/2678
Group)
FP-144H
(H8S/2678R
Group)
I/O Function
Power supply V
CC
5, 39, 67,
96, 116
5, 39, 67,
96, 116
Input For connection to the power supply.
All V
CC
pins should be connected to
the system power supply.
V
SS
12, 19, 26,
47, 76, 99,
136
12, 19, 26,
47, 76, 99,
136
Input For connection to ground. All V
SS
pins should be connected to the
system power supply (0 V).
PLLV
CC
94 94 Input Power supply pin for the on-chip
PLL oscillator.
PLLV
SS
92 92 Input Ground pin for the on-chip PLL
oscillator.
Clock XTAL 98 98 Input For connection to a crystal
oscillator. See section 21, Clock
Pulse Generator for typical
connection diagrams for a crystal
oscillator and external clock input.
EXTAL 97 97 Input For connection to a crystal
oscillator. The EXTAL pin can also
input an external clock. See section
21, Clock Pulse Generator for
typical connection diagrams for a
crystal oscillator and external clock
input.
φ 95 95 Output Supplies the system clock to
external devices.
SDRAMφ — 106 Output When a synchronous DRAM is
connected, this pin is connected to
the CLK pin of the synchronous
DRAM. For details, refer to section
6, Bus Controller (BSC).
Operating
mode control
MD2
MD1
MD0
1, 144,
143
1, 144,
143
Input These pins set the operating mode.
These pins should not be changed
while the MCU is operating.