HD6433802H Datasheet, PDF (172/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

8.6.3 Pin Functions
Table 8.15 shows the port 7 pin functions.
Table 8.15 Port 7 Pin Functions
Pin
P7₇/SEG₂₄ to
P7₀/SEG₁₇
Pin Functions and Selection Method
The pin function depends on bit PCR7_n in PCR7 and bits SGS3 to SGS0 in
LPCR.
P7₇ to P7₄
SEGS3 to SEGS0
Other than 0110, 0111, 1000, 1001,
1010, 1011, 1100, 1101
(n = 7 to 4)
0110, 0111, 1000,
1001, 1010, 1011,
1100, 1101
PCR7_n
Pin function
0
P7_n input pin
1
P7_n output pin
*
SEG_n+17 output pin
P7₃ to P7₀
SEGS3 to SEGS0
PCR7_m
Pin function
Other than 0101, 0110, 0111, 1000,
1001, 1010, 1011, 1100
0
P7_m input pin
1
P7_m output pin
(m = 3 to 0)
0101, 0110, 0111,
1000, 1001, 1010,
1011, 1100
*
SEG_m+17 output
pin
*: Don’t care
8.6.4 Pin States
Table 8.16 shows the port 7 pin states in each operating mode.
Table 8.16 Port 7 Pin States
Pins
P7₇/SEG₂₄ to
P7₀/SEG₁₇
Reset
Sleep Subsleep Standby Watch Subactive Active
High-
Retains Retains High-
Retains Functional Functional
impedance previous previous impedance previous
state state
state
154