UPD78F9418A NEC, UPD78F9418A Datasheet - Page 83
UPD78F9418A
Manufacturer Part Number
UPD78F9418A
Description
(UPD7894xxA) 8-Bit Single Chip Microcontrollers
Manufacturer
NEC
Datasheet
1.UPD78F9418A.pdf
(319 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F9418A
Manufacturer:
NEC
Quantity:
1 831
Part Number:
UPD78F9418AGC
Manufacturer:
NEC
Quantity:
20 000
Company:
Part Number:
UPD78F9418AGC-8BT-A
Manufacturer:
RENESAS
Quantity:
800
Company:
Part Number:
UPD78F9418AGC-8BT-A
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
UPD78F9418AGK-9EU
Manufacturer:
NEC
Quantity:
20 000
Company:
Part Number:
UPD78F9418AGK-9EU-A
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 83 of 319
- Download datasheet (3Mb)
www.DataSheet4U.com
4.2.6 Port 8
mode register 8 (PM8). When using the P80 to P87 pins as input port pins, internal pull-up resistors can be
connected in 2-bit units by using pull-up resistor option register 2 (PU2).
This is an 8-bit I/O port with an output latch. Port 8 can be specified as input or output in 1-bit units by using port
Port 8 is also used to output segment signals for the LCD controller/driver.
Port 8 is set to input mode when the RESET signal is input.
Figure 4-13 shows a block diagram of port 8.
PU2:
PM:
RD:
WR:
LPS0:
n = 0, 2, 4, 6, m = 0 to 7
WR
WR
WR
WR
RD
PORT
PU2
LPS
PM
Pull-up resistor option register 2
Port mode register
Port 8 read signal
Port 8 write signal
LCD port selector 0
Segment output
Output latch
PU28n
PM8m
(P8m)
LPS0
Figure 4-13. Block Diagram of P80 to P87
CHAPTER 4 PORT FUNCTIONS
User’s Manual U13952EJ3V0UD
V
DD0
P-ch
P80/S27 to P87/S20
83
Related parts for UPD78F9418A
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
16BIT MCU, 128K FLASH, 8K RAM, SMD
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
8BIT UC, 32K FLASH, 1KB RAM, LCD
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
8BIT MCU, 60K FLASH, 3KB RAM, CAN
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
8BIT MCU, 128K FLASH, 7K RAM, LQFP
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
8BIT MCU, 4K FLASH, 128B RAM, SMD
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
16/8 bit single-chip microcomputer
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
Dual audio power amp circuit
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
Dual comparator
Manufacturer:
NEC
Datasheet:
Part Number:
Description:
MOS type composite field effect transistor
Manufacturer:
NEC
Datasheet: