UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 94

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

4.2.9 Port 15
using port mode register 15 (PM15). When the P150 to P153 pins are used as an input port, use of an on-chip pull-up
resistor can be specified in 1-bit units by pull-up resistor option register 15 (PU15).
94
This port can also be used for segment output.
Reset signal generation sets port 15 to input mode.
Figure 4-15 shows a block diagram of port 15.
Port 15 is a 4-bit I/O port with an output latch. Port 15 can be set to the input mode or output mode in 1-bit units
WR
P15:
PU15:
PM15:
PFALL: Port function register ALL
RD:
WR
WR
WR
WR
RD
PORT
PU
PM
PF
: Write signal
Port register 15
Pull-up resistor option register 15
Port mode register 15
Read signal
LCD controller/driver
PM150 to PM153
PU150 to PU153
(P150 to P153)
Output latch
PF15ALL
PFALL
PM15
PU15
P15
Figure 4-15. Block Diagram of P150 to P153
CHAPTER 4 PORT FUNCTIONS
User’s Manual U18698EJ1V0UD
V
DD
P-ch
P150/SEG12 to
P153/SEG15