Z86D990 Datasheet, PDF (55/102 Pages) Zilog, Inc. – Low-Voltage Micro controllers with ADC

Z86D990/Z86D991 OTP and Z86L99X ROM
Low-Voltage Microcontrollers with ADC
48
T8 (8-Bit)
Transmit Mode
Reset T8_Enable Bit
No
T8_Enable Bit Set
CTR0 D7
Yes
0
Load TC8L
Reset T8_OUT
CTR1 D1
Value
1
Load TC8H
Set T8_OUT
Set Time-out Status Bit
(CTR0 D5) and Generate
Timeout_Int. if Enabled
Enable T8
No _{T8_Timeout}
Yes
Single Pass
Single
Pass?
Modulo-N
1
Load TC8L
Reset T8_OUT
T8_OUT Value
0
Load TC8H
Set T8_OUT
Enable T8
No
T8_Timeout
Yes
Disable T8
Set Time-out Status Bit
(CTR0 D5) and Generate
Timeout_Int. if Enabled
Figure 34. Transmit Mode Flowchart
PS003807-1002
PRELIMINARY