Z8 Encore!® Motor Control Flash MCUs
Product Specification
10
Table 1. Signal Descriptions (Continued)
Description
Signal Mnemonic
I/O
Analog
ANA[7:0]
I
Analog Input. These signals are inputs to the analog-to-digital converter
(ADC).
VREF
I/O
Voltage buffer output. This signal provides reference voltage for external
components.
Caution
If using the internal reference voltage generator, a 10µF capacitor must
be placed on this pin to Ground.
CINP
I
I
Comparator positive input.
Comparator negative input.
Comparator output.
CINN
COMPOUT
OPINP
OPINN
OPOUT
O
I
Operational amplifier positive input.
Operational amplifier negative input.
Operational amplifier output.
I
O
Oscillators
XIN
I
The External Crystal Input is the input pin to the crystal oscillator. A
crystal can be connected between it and the XOUT pin to form the
oscillator. In addition, this pin is used with external RC networks or
external clock drivers to provide the system clock.
XOUT
O
External Crystal Output. This pin is the output of the crystal oscillator. A
crystal can be connected between it and the XIN pin to form the oscillator.
This pin must be left unconnected when not using a crystal.
On-Chip Debugger
DBG
I/O
Debug. This open-drain pin provides the single-pin control and data
interface to the On-Chip Debugger. For operation of the On-chip
Debugger, all power pins (V ) must be supplied with power, and all
DD
ground pins (V ) must be grounded.
SS
This pin is open-drain and must have an external pull-up resistor to
ensure proper operation.
Caution
Reset-PWM Fault
RESET/FAULT0
I/O
RESET input pin generates a Reset or PWM fault when asserted (driven
Low). The function selection is determined by the FLTSEL bit of the User
Options Bits at Program Memory Address 0001h, and the FAULTSEL bit
in the Reset Status and Control Register.
Signal and Pin Descriptions
P R E L I M I N A R Y
PS024604-1005
ZILOG [ ZILOG, INC. ]
