upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 81
upd78f0114m6gb-8es
Manufacturer Part Number
upd78f0114m6gb-8es
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114M6GB-8ES.pdf
(534 pages)
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4.2.1 Port 0
using port mode register 0 (PM0). When the P00 and P01 pins are used as an input port, use of an on-chip pull-up
resistor can be specified by pull-up resistor option register 0 (PU0).
Port 0 is a 2-bit I/O port with an output latch. Port 0 can be set to the input mode or output mode in 1-bit units
This port can also be used for timer I/O.
RESET input sets port 0 to input mode.
Figures 4-2 and 4-3 show block diagrams of port 0.
PU0:
PM0:
RD:
WR××: Write signal
WR
WR
WR
RD
PORT
PM
PU
Pull-up resistor option register 0
Port mode register 0
Read signal
Output latch
Alternate
function
PM00
PU00
(P00)
PU0
PM0
Figure 4-2. Block Diagram of P00
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16227EJ3V0UD
EV
DD
P-ch
P00/TI000
81
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