Pin Functions; Table 1.2 Pin Functions - Renesas H8S/2158 User Manual

Section 1 Overview
1.3.3

Pin Functions

Table 1.2 Pin Functions
Type Symbol
Power VCC
supply
VCL
VSS
Clock XTAL
EXTAL
φ
EXCL
X1
X2
MD2
Operating
mode MD1
control MD0
RES
System
control
RESO
STBY
FWE
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REJ09B0286-0300
Pin No.
TBP-112A I/O
G8, G9 Input
E3 Input
F4, G1 Input
E8, D10
C11, B5
C5
B1 Input
C2 Input
G3 Output
G3 Input
E1 Input
E2 Input
C1 Input
D3
D2
B2 Input
C3 Output
E4 Input
A2 Input
Name and Function
Power supply pins. Connect all these
pins to the system power supply.
Power supply pin. Connect this pin to
VCC.
Ground pins. Connect all these pins to
the system power supply (0 V).
For connection to a crystal resonator. An
external clock can be supplied from the
EXTAL pin. For an example of crystal
resonator connection, see section 26,
Clock Pulse Generator.
Supplies the system clock to external
devices.
32.768-kHz external clock for subclock
should be supplied.
For connection to a crystal resonator. An
external clock can be supplied from the
X2 pin. For an example of crystal
resonator connection, see section 26,
Clock Pulse Generator.
These pins set the operating mode.
Inputs at these pins should not be
changed during operation.
Reset pin. When this pin is low, the chip
is reset.
Outputs a reset signal to an external
device.
When this pin is low, a transition is made
to hardware standby mode.
Pin for use by flash memory.