RL78/G13 CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00 223
Sep 22, 2011
For example, figures 4-42 to 4-45 show block diagrams of port 9.
Figure 4-42. Block Diagram of P90 to P94
P90 to P94
WR
PU
RD
WR
PORT
WR
PM
EV
DD
P-ch
PU9
PM9
P9
PM90 to PM94
PU90 to PU94
Output latch
(P90 to P94)
Selector
Internal bus
P9: Port register 9
PU9: Pull-up resistor option register 9
PM9: Port mode register 9
RD: Read signal
WR××: Write signal