Z8E520 Datasheet, PDF (13/43 Pages) Zilog, Inc. – 1.5 MBPS USB Device Controller

Zilog
Z8E520/C520
1.5 MBPS USB Device Controller
PIN FUNCTIONS
Port A. Port A (4–7) includes a Sink configuration. Port A In Switch, the options also include input wakeup, bidirec-
(3–0) has a Switch configuration.
1 ^{tional, push-pull or open drain configurations (Figure 8).}
The only difference between the two is the programmable
In Sink, the options include input wakeup, bidirectional, _{Sink option.}
push-pull or open drain configurations (Figure 7). The Sink
is programmable from 0–15 mA (in 1 mA increments).
Vcc
± 30% 100 K Typical
TBD
Pullup Resistor Enable
V cc
In
Wa ke
I SINK (3 :0)
Pa d
0 –15 mA/ 1 mA increments
Figure 7. Port A (4–7) Sink Configuration
Table 3. Port A (4–7) Programmable Current Sink Table
Symbol Parameter
Min.
Max.
Units Conditions
N
Number of Bits
Bits 4 bits, 16 settings, 0–15 mA
DNL
Diff Non-Linearity
0.50
LSB
I₀
I_LSB
I_F
T_settle
I_overshoot
V_comp
Zero Code/Disable
LSB Current
Full Scale Current
Settling Time
Overshoot Current
Compliance Voltage
0.65
9.75
1.35
20.25
1600
1.05*I_set
1.1
µA Disabled
mA 35%
mA 35%, Note 1
nS Within 10% of final value
µA
V Above V_ss with I_FMAX
Notes:
1. Setting all (4) I_SNK cells to full scale is a violation of the Absolute Maximum Rating Spec.
DS97KEY2005
PRELIMINARY
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