HD6433937 Datasheet, PDF (159/521 Pages) Hitachi Semiconductor – Hardware Manual

8.3.3 Function
Table 8-6 shows the port 2 functions.
Table 8-6 Port 2 Functions
Functions
P2₄, P2₃
P2₂/SO₁
P2₁/SI₁
P2₀/SCK₁
Functions and Selection Method
The function depends on the corresponding bit in PCR2.
PCR2_n
Function
0
P2_n input
(n = 4 or 3)
1
P2_n output
The function depends on bit SO1 in PMR2 and bit PCR2₂ in PCR2.
SO1
0
1
PCR2₂
Function
0
P2₂ input
1
P2₂ output
*
SO₁ output
The function depends on bit SI1 in PMR2 and bit PCR2₁ in PCR2.
SI1
0
1
PCR2₁
Function
0
P2₁ input
1
P2₁ output
*
SI₁ input
The function depends on bit SCK1 in PMR2 and bit PCR2₀ in PCR2.
SCK1
0
1
PCR2₀
Function
0
P2₀ input
1
P2₀ output
*
SCK₁ I/O
*: Don’t care
8.3.4 States
Table 8-7 shows the port 2 states in each operating mode.
Table 8-7 Port 2 States
Functions
P2₄
P2₃
P2₂/SO₁
P2₁/SI₁
P2₀/SCK₁
Reset
Low
High
Low
Sleep
Retains
previous
state
Subsleep Standby
Retains Retains
previous previous
state
state
Watch
Retains
previous
state
Subactive Active
Functional Functional
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