Datasheet

Table Of Contents
Section 9 I/O Ports
Page 246 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
9.4.4 Pin Functions
Port 7 pins also function as bus control output pins, manual reset input pin, and 8 bit timer
input/output. Port 7 pin functions are shown below.
Table 9.17 P74 Pin Function
MRESE 0 1
P74DDR 0 1 —
Pin function P74 input P74 output MRES input
Table 9.18 P73 Pin Function
Operating Mode Modes 4 to 6 Mode 7
OS3 to OS0 in
TCSR_1
OS3 to OS0 are all 0 At least one
of OS3 to
OS0 is 1
OS3 to OS0 are all 0 At least one
of OS3 to
OS0 is 1
P73DDR 0 1 — 0 1 —
Pin function P73 input CS7 output TMO1 output P73 input P73 output TMO1 output
Table 9.19 P72 Pin Function
Operating Mode Modes 4 to 6
*
Mode 7
OS3 to OS0 in
TCSR_0
OS3 to OS0 are all 0s At least
one of OS3
to OS0 is 1
OS3 to OS0 are all 0 At least one
of OS3 to
OS0 is 1
P72DDR 0 1 — 0 1 —
Pin function P72 input CS6 output TMO0
output
P72 input P72output TMO0
output
Note: * When on-chip USB is used in modes 4 to 6, bit P72DDR should be set to 1 so that the
pin outputs CS6.
Table 9.20 P71 Pin Function
Operating Mode Modes 4 to 6 Mode 7
P71DDR 0 1 0 1
Pin function P71 input CS5 output P71 input P71 output