MB95710M Series
MB95770M Series
Document Number: 002-09307 Rev. *D
Page 86 of 172
• PF2/RST pin
This pin has the following peripheral function:
• Reset pin (RST)
• Block diagram of PF2/RST
18.12.3 Port F registers
• Port F register functions
*: If the pin is an N-ch open drain pin, the pin state becomes Hi-Z.
• Correspondence between registers and pins for port F
*: PF2/RST is the dedicated reset pin on MB95F714M/F716M/F718M.
Register
abbreviation
Data
Read
Read by read-modify-write
(RMW) instruction
Write
PDRF
0
Pin state is “L” level.
PDRF value is “0”.
As output port, outputs “L” level.
1
Pin state is “H” level.
PDRF value is “1”.
As output port, outputs “H” level.*
DDRF
0
Port input enabled
1
Port output enabled
Correspondence between related register bits and pins
Pin name
-
-
-
-
-
PF2
*
PF1
PF0
PDRF
-
-
-
-
-
bit2
bit1
bit0
DDRF
PDRF
PDRF read
PDRF write
Executing bit manipulation instruction
DDRF read
DDRF write
DDRF
0
1
1
0
Stop mode, watch mode (SPL = 1)
Reset input
Reset input enable
Reset output enable
Reset output
Pin
OD
Inter
nal b
u
s
Hysteresis