UPD78F0535GB(T)-UEU-A NEC, UPD78F0535GB(T)-UEU-A Datasheet - Page 129
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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5.2.11 Port 14
using port mode register 14 (PM14). When the P140 and P141 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 14 (PU14).
Port 14 is a 6-bit I/O port with an output latch. Port 14 can be set to the input mode or output mode in 1-bit units
This port can also be used for external interrupt request input, buzzer output, and clock output.
Reset signal generation sets port 14 to input mode.
Figures 5-25 shows a block diagram of port 14.
WR
WR
WR
P14:
PU14:
PM14:
RD:
WR××: Write signal
RD
PORT
PU
PM
Read signal
Port register 14
Pull-up resistor option register 14
Port mode register 14
PM140, PM141
PU140, PU141
(P140, P141)
Output latch
Alternate
Alternate
function
function
PM14
PU14
P14
Figure 5-25. Block Diagram of P140 and P141
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17260EJ6V0UD
EV
DD
P-ch
P140/PCL/INTP6,
P141/BUZ/INTP7
129
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