HD6473887 Datasheet, PDF (161/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

8.3.3 Pin Function
Table 8-6 shows the port 2 pin functions.
Table 8-6 Port 2 Pin Functions
Pin
P2₇ to P2₃
P2₂/SO₁
P2₁/SI₁
P2₀/SCK₁
Pin Functions and Selection Method
The pin function depends on the corresponding bit in PCR2.
(n = 7 to 3)
PCR2_n
Pin function
0
P2_n input pin
1
P2_n output pin
The pin function depends on bit SO1 in PMR2 and bit PCR2₂ in PCR2.
SO1
0
1
PCR2₂
Pin function
0
P2₂ input pin
1
P2₂ output pin
*
SO₁ output pin
The pin function depends on bit SI1 in PMR2 and bit PCR2₁ in PCR2.
SI1
0
1
PCR2₁
Pin function
0
P2₁ input pin
1
P2₁ output pin
*
SI₁ input pin
The pin function depends on bit SCK1 in PMR2 and bit PCR2₀ in PCR2.
SCK1
0
1
PCR2₀
Pin function
0
P2₀ input pin
1
P2₀ output pin
*
SCK₁ I/O pin
*: Don’t care
8.3.4 Pin States
Table 8-7 shows the port 2 pin states in each operating mode.
Table 8-7 Port 2 Pin States
Pins
P2₇ to P2₃
P2₂/SO₁
P2₁/SI₁
P2₀/SCK₁
Reset
Sleep
High-
Retains
impedance previous
state
Subsleep Standby Watch
Retains
previous
state
High-
Retains
impedance previous
state
Subactive Active
Functional Functional
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