Z8F6421PM020SC Datasheet, PDF (61/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Z8 Encore!
41
Port H Address
PHADDR (FECH - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port H Address[7:0]
Selects Port Sub-Registers:
00H = No function
01H = Data direction
02H = Alternate function
03H = Output control (open-drain)
04H = High drive enable
05H = STOP mode recovery enable
06H-FFH = No function
Port H Control
PHCTL (FEDH - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port H Control [3:0]
Provides Access to Port Sub-Registers
Reserved
Port H Input Data
PHIN (FEEH - Read Only)
D7 D6 D5 D4 D3 D2 D1 D0
Port H Input Data [3:0]
Reserved
Port H Output Data
PHOUT (FEFH - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port H Output Data [3:0]
Reserved
Watch-Dog Timer Control
WDTCTL (FF0H - Read Only)
D7 D6 D5 D4 D3 D2 D1 D0
SM Configuration Indicator
Reserved
EXT
0 = Reset not generated by RESET pin
1 = Reset generated by RESET pin
WDT
0 = WDT timeout has not occurred
1 = WDT timeout occurred
STOP
0 = SMR has not occurred
1 = SMR has occurred
POR
0 = POR has not occurred
1 = POR has occurred
Watch-Dog Timer Reload Upper Byte
WDTU (FF1H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
WDT reload value [23:16]
Watch-Dog Timer Reload Middle Byte
WDTH (FF2 H- Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
WDT reload value [15:8]
Watch-Dog Timer Reload Low Byte
WDTL (FF3H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
WDT reload value [7:0]
Flash Control
FCTL (FF8H - Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
Flash Command
73H = First unlock command
8CH = Second unlock command
95H = Page erase command
63H = Mass erase command
5EH = Flash Sector Protect reg select
PS019915-1005
Control Register Summary