HD64F2145 Datasheet, PDF (58/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

1.3.3 Pin Functions
Table 1.3 Pin Functions
Type
Power
Symbol
VCC
VCL
VCCB
VSS
Clock
XTAL
EXTAL
ø
EXCL
X1
X2
Operating MD1
mode MD0
control
System 5(6
control
5(62
67%<
Pin No.
FP-100B,
TFP-100B TFP-144 I/O
Name and Function
59
1, 86 Input Power supply pin. Connect the pin to the
system power supply.
9
13
Input Power supply pin. Connect the pin to VCC.
4
36
Input The power supply for the port A
input/output buffer.
15, 70, 71, 7, 42, 95, Input Ground pin. Connect to the system power
92
111, 139
supply (0 V).
2
143
Input Pins for connection to crystal resonators.
3
144
Input ^{The EXTAL pin can also input an external}
clock.
See section 25, Clock Pulse Generator, for
typical connection diagrams.
17
18
Output Supplies the system clock to external
devices.
17
18
Input Input a 32.768 kHz external subclock.
—
140
Input Leave open.
—
141
Input Leave open.
5
9
Input These pins set the operating mode. These
6
10
pins should not be changed while the MCU
is operating.
1
8
Input Reset pin.
When this pin becomes low, the chip is
reset.
100
142
Output Outputs reset signal to external device.
8
12
Input When this pin is driven low, a transition is
made to hardware standby mode.
Rev. 2.0, 08/02, page 18 of 788