4 pin configuration (top view) – NEC switch User Manual
Page 22
CHAPTER 1 GENERAL
User’s Manual U12978EJ3V0UD
22
1.4 Pin Configuration (Top View)
• 44-pin plastic LQFP (10 × 10)
µPD789800GB-×××-8ES, µPD78F9801GB-8ES
P04
P03
P02
P01
P00
V
DD1
V
SS1
P17
P16
P15
P14
NC
P13
P12
P11
P10
P47/KR07
P46/KR06
P45/KR05
P44/KR04
P43/KR03
P42/KR02
USBDP
USBDM
IC (V
PP
)
REGC
V
DD0
V
SS0
X1
X2
RESET
P40/KR00
P41/KR01
P05
P06
P07
P20/SCK10
P21/SO10
P22/SI10
P23
NC
P24
P25
P26/TI01/TO01/INTP0
44 43 42 41 40 39 38 37 36 35 34
12 13 14 15 16 17 18 19 20 21 22
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
29
28
27
26
25
24
23
Cautions
1. Connect the IC pin directly to the V
SS0
pin.
2. Directly connect the V
PP
pin to the V
SS0
pin in the normal operation mode.
Remark
The parenthesized values apply to the
µPD78F9801.
IC:
Internally connected
SI10:
Serial data input
INTP0:
Interrupt from peripherals
SO10:
Serial data output
KR00 to KR07 : Key return
TI01:
Timer input
NC:
No connection
TO01:
Timer output
P00 to P07:
Port 0
USBDM, USBDP: Universal serial bus data
P10 to P17:
Port 1
V
DD0
:
Port power supply
P20 to P26:
Port 2
V
DD1
:
Power supply
P40 to P47:
Port 4
V
PP
:
Programming power supply
RESET :
Reset
V
SS0
:
Port ground
REGC:
Voltage regulator for USB function
V
SS1
:
Ground
SCK10 :
Serial clock input/output
X1, X2:
Crystal