Cypress MB95710M Series - Port G (MB95770 M)

MB95710M Series
MB95770M Series
Document Number: 002-09307 Rev. *D Page 120 of 172
•PF2/RST pin
This pin has the following peripheral function:
• Reset pin (RST
)
• Block diagram of PF2/RST
19.10.3 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 MB95F774M/F776M/F778M.
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
-----bit2bit1bit0
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
Internal bus
Hysteresis