Z8 Encore! XP® F08xA Series
Product Specification
11
Table 3. Signal Descriptions (Continued)
Signal Mnemonic
I/O
Description
V
I
I
Digital Ground.
Analog Ground.
SS
AV
SS
Note: The AV and AV signals are available only in 28-pin packages with ADC. They are replaced by
DD
SS
PB6 and PB7 on 28-pin packages without ADC.
Pin Characteristics
Table 4 provides detailed information about the characteristics for each pin available on
the Z8 Encore! XP® F08xA Series 20- and 28-pin devices. Data in Table 4 is sorted alpha-
betically by the pin symbol mnemonic.
Table 4. Pin Characteristics (20- and 28-pin Devices)
Active Low
or
Internal Pull- Schmitt
up Trigger Open Drain
Symbol
Reset
Tristate
5V
Mnemonic Direction Direction Active High Output or Pull-down Input
Output
Tolerance
AVDD
AVSS
DBG
N/A
N/A
I/O
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Yes
Yes
N/A
N/A
No
N/A
N/A
Yes
Yes
N/A
N/A
NA
N/A
N/A
I
I
Yes
Yes
PA[7:0]
I/O
Programmable
Pull-up
Yes,
Programmable
PA[7:2]
only
PB[7:0]
PC[7:0]
I/O
I/O
I/O
I
I
N/A
N/A
Yes
Yes
Programmable
Pull-up
Yes
Yes
Yes
Yes,
Programmable
PB[7:6]
only
Programmable
Pull-up
Yes,
Programmable
PC[7:3]
only
RESET/
PD0
I/O
Low (in
Yes (PD0 programmable
programmable
for PD0; always
on for RESET
Yes
(defaultsto Reset mode) only)
RESET)
for PD0;
always on for
RESET
VDD
VSS
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
PB6 and PB7 are available only in those devices without ADC.
Note:
PS024705-0405
P R E L I M I N A R Y
Pin Description
ZILOG [ ZILOG, INC. ]
