H8S2456 Datasheet, PDF (58/1376 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family / H8S/2400 Series

Section 1 Overview
Pin No.
H8S/2456, H8S/2456R H8S/2454
Type
Symbol 144-Pin 145-Pin
120-Pin I/O
Function
Clock XTAL 96
EXTAL 97
φ
94
SDRAMφ 36
*¹
F12
81
F13
82
F10
79
M1

Input
For connection to a crystal oscillator.
See section 24, Clock Pulse
Generator, for typical connection
diagrams for a crystal resonator and
external clock input.
Input
For connection to a crystal oscillator.
The EXTAL pin can also input an
external clock. See section 24, Clock
Pulse Generator, for typical
connection diagrams for a crystal
resonator and external clock input.
Output Supplies the system clock to external
devices.
Output
When a synchronous DRAM is
connected, this pin is connected to
the CLK pin of the synchronous
DRAM. For details, see section 6,
Bus Controller (BSC).
Operating MD2
1
B1
mode
MD1
144
A2
control
MD0
143
A3
1
Input These pins set the operating mode.
120
These pins should not be changed
during operation.
119
Rev. 1.00 Sep. 19, 2008 Page 28 of 1342
REJ09B0467-0100