Pin Functions - Renesas H8S Series Hardware Manual

1.4

Pin Functions

Type Symbol
Power VCC
Supply
VSS
VCL
Clock PLLVCL
PLLVSS
PLLCAP
XTAL
EXTAL
φ
Operating MD2
mode MD1
control MD0
RES
System
control
STBY
FWE
Pin NO. I/O
27 Input
48
76
25 Input
50
78
52 Output
80
44 Output
46 Input
42 Output
47 Input
49 Input
15 Output
40 Input
39
38
41 Input
45 Input
51 Input
Function
Power supply pins. Connect all these pins to the
system power supply.
Ground pins. Connect all these pins to the system
power supply (0V).
External capacitance pin for internal power-down
power supply. Connect this pin to VSS via a
0.1-µF capacitor (placed close to the pins).
External capacitance pin for internal power-down
power supply for an on-chip PLL oscillator.
Connect this pin to PLLVSS via a 0.1-µF
capacitor (placed close to the pins).
On-chip PLL oscillator ground pin.
External capacitance pin for an on-chip PLL
oscillator.
For connection to a crystal resonator. For
examples of crystal resonator connection and
external clock input, see section 19, Clock Pulse
Generator.
For connection to a crystal resonator. (An
external clock can be supplied from the EXTAL
pin.) For examples of crystal resonator
connection and external clock input, see section
19, Clock Pulse Generator.
Supplies the system clock to external devices.
Set the operating mode. Inputs at these pins
should not be changed during operation.
Reset input pin. When this pin is low, the chip is
reset.
When this pin is low, a transition is made to
hardware standby mode.
Pin for use by flash memory. This pin is only used
in the flash memory version.
Rev. 6.00 Mar 15, 2006 page 7 of 570
Section 1 Overview
REJ09B0211-0600