MC68HC08AZ16 Datasheet, PDF (419/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Appendix A: Related Devices
Pin descriptions
Power supply
pins(E_VDD3/E_VDD1
and E_VSS4/E_VSS1)
The E_VDD and E_VSS pins are for the sole use of the I/O pins. This will help
reduce the effect of the noise induced into the V_SS power supply.
External data pins EDB7-EDB0 are the bidirectional data lines for connection to external
(EDB7-EDB0)
peripherals.
External address
EAB15-EAB0 are the address lines for connection to external
pIns (EAB15-EAB0) peripherals. See External Bus Interface (EBI) Module on page 423.
Write control pin
(WEB)
WEB is the write control signal for external peripherals. See External
Bus Interface (EBI) Module on page 423.
Read control pin
(REB)
REB is the read control signal for external peripherals. See External
Bus Interface (EBI) Module on page 423.
WAIT states clock
pin (WSCLK)
WSCLK is the External WAIT State control signal. See External Bus
Interface (EBI) Module on page 423.
External
chip-select pins
(CS1,CS0)
CS1 and CS0 are the chip-select lines for connection to external
peripherals. See External Bus Interface (EBI) Module on page 423.
The external pins are summarized in Table 1 and the clock sources are
shown in Table 2.
MC68HC08AZ32
418
Appendix A: Related Devices
6-appA
MOTOROLA