Datasheet

78K0/Kx2-L CHAPTER 4 PORT FUNCTIONS
R01UH0028EJ0400 Rev.4.00 153
Sep 27, 2010
Figure 4-19. Block Diagram of P40
Alternate
function
Alternate
function (CSI11)
Alternate
function (RTC)
Output latch
(P40)
Selector
Internal bus
P40/RTCCL/RTCDIV (/SCK11)
WR
PU
RD
WR
PORT
WRPM
PU40
PM40
P-ch
PM4
PU4
P4
VDD
Selector
Selector
CSISEL
MUXSEL
Input signal from
P60/SCK11
Selector
CSISEL
MUXSEL
Output signal to
P60/SCK11
P4: Port register 4
PU4: Pull-up resistor option register 4
PM4: Port mode register 4
MUXSEL: Port alternate switch control register
RD: Read signal
WR××: Write signal