Z8F6421PM020SC Datasheet, PDF (54/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Z8 Encore!
34
SPI Status
SPISTAT (F62H - Read Only)
D7 D6 D5 D4 D3 D2 D1 D0
Slave Select
0 = If Slave, SS pin is asserted
1 = If Slave, SS pin is not asserted
Transmit Status
0 = No data transmission in progress
1 = Data transmission now in progress
Reserved
Slave Mode Transaction Abort
0 = No slave mode transaction abort
detected
1 = Slave mode transaction abort was
detected
Collision
0 = No multi-master collision detected
1 = Multi-master collision was detected
Overrun
0 = No overrun error detected
1 = Overrun error was detected
Interrupt Request
0 = No SPI interrupt request pending
1 = SPI interrupt request is pending
SPI Mode
SPIMODE (F63H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Slave Select Value
If Master and SPIMODE[1] = 1:
0 = SS pin driven Low
1 = SS pin driven High
Slave Select I/O
0 = SS pin configured as an input
1 = SS pin configured as an output
(Master mode only)
Number of Data Bits Per Character
000 = 8 bits
001 = 1 bit
010 = 2 bits
011 = 3 bits
100 = 4 bits
101 = 5 bit
110 = 6 bits
111 = 7 bits
Diagnostic Mode Control
0 = Reading from SPIBRH, SPIBRL
returns reload values
1 = Reading from SPIBRH, SPIBRL
returns current BRG count value
Reserved
SPI Diagnostic State
SPIDST (F64H - Read Only)
D7 D6 D5 D4 D3 D2 D1 D0
SPI State
Transmit Clock Enable
0 = Internal transmit clock enable
signal is deasserted
1 = Internal transmit clock enable
signal is asserted
Shift Clock Enable
0 = Internal shift clock enable signal
is deasserted
1 = Internal shift clock enable signal
is asserted
SPI Baud Rate Generator High Byte
SPIBRH (F66H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
SPI Baud Rate divisor [15:8]
SPI Baud Rate Generator Low Byte
SPIBRL (F67H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
SPI Baud Rate divisor [7:0]
ADC Control
ADCCTL (F70H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Analog Input Select
0000 = ANA0 0001 = ANA1
0010 = ANA2 0011 = ANA3
0100 = ANA4 0101 = ANA5
0110 = ANA6 0111 = ANA7
1000 = ANA8 1001 = ANA9
1010 = ANA10 1011 = ANA11
11xx = Reserved
Continuous Mode Select
0 = Single-shot conversion
1 = Continuous conversion
External VREF select
0 = Internal voltage reference selected
1 = External voltage reference selected
Reserved
Conversion Enable
0 = Conversion is complete
1 = Begin conversion
PS019915-1005
Control Register Summary