Pin Functions; Table 1.2 Pin Functions - Renesas H8S/2111B Hardware Manual

1.3.3

Pin Functions

Table 1.2 Pin Functions
Type Symbol
Power VCC
VCL
VCCB
VSS
Clock XTAL
EXTAL
φ
EXCL
X1
X2
Operating MD1
mode control MD0
RES
System
control
RESO
STBY
Interrupt NMI
signals
IRQ0 to
IRQ7
Pin No.
TFP-144 I/O
1, 86 Input
13 Input
36 Input
7, 42, 95, Input
111, 139
143 Input
144 Input
18 Output
18 Input
140 Input
141 Input
9 Input
10
8 Input
142 Output
12 Input
11 Input
22 to 24, Input
133 to 135,
84, 85
Name and Function
Power supply pin. Connect the pin to the
system power supply.
Power supply pin. Connect the pin to VCC.
The power supply for the port A input/output
buffer.
Ground pin. Connect to the system power
supply (0 V).
Pins for connection to crystal resonators. The
EXTAL pin can also input an external clock.
See section 19, Clock Pulse Generator, for
typical connection diagrams.
Supplies the system clock to external
devices.
Input a 32.768 kHz external subclock.
Leave open.
Leave open.
These pins set the operating mode. These
pins should not be changed while the MCU is
operating.
Reset pin.
When this pin becomes low, the chip is reset.
Outputs reset signal to external device.
When this pin is driven low, a transition is
made to hardware standby mode.
Input pin for a nonmaskable interrupt request.
These pins request a maskable interrupt.
Rev. 1.00, 05/04, page 9 of 544