UPD78F0535GB(T)-UEU-A NEC, UPD78F0535GB(T)-UEU-A Datasheet - Page 120
UPD78F0535GB(T)-UEU-A
Manufacturer Part Number
UPD78F0535GB(T)-UEU-A
Description
8BIT MCU, 60K FLASH, 3KB RAM, LQFP
Manufacturer
NEC
Datasheet
1.UPD78F0535GBT-UEU-A.pdf
(773 pages)
Specifications of UPD78F0535GB(T)-UEU-A
Controller Family/series
UPD78
No. Of I/o's
55
Ram Memory Size
3KB
Cpu Speed
20MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
60KB
Oscillator Type
External, Internal
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5.2.5 Port 4
using port mode register 4 (PM4). When the P40 to P43 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 4 (PU4).
120
Port 4 is a 4-bit I/O port with an output latch. Port 4 can be set to the input mode or output mode in 1-bit units
Reset signal generation sets port 4 to input mode.
Figure 5-16 shows a block diagram of port 4.
P4:
PU4:
PM4:
RD:
WR××: Write signal
WR
WR
WR
RD
PORT
Port register 4
Pull-up resistor option register 4
Port mode register 4
Read signal
PM
PU
PM40 to PM43
PU40 to PU43
(P40 to P43)
Output latch
PU4
PM4
P4
Figure 5-16. Block Diagram of P40 to P43
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17260EJ6V0UD
Selector
EV
DD
P-ch
P40 to P43
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