C8051F040DK Silicon Laboratories Inc, C8051F040DK Datasheet - Page 203

• Manufacturer Part Number: C8051F040DK
• Description: DEV KIT FOR F040/F041/F042/F043
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F040DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F04x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F040
• Silicon Family Name: C8051F04x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Silicon Laboratories C8051 F040, 041, 042, 043 MCUs
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1205

17. Port Input/Output
The C8051F04x family of devices are fully integrated mixed-signal System on a Chip MCUs with 64 digital
I/O pins (C8051F040/2/4/6) or 32 digital I/O pins (C8051F041/3/5/7), organized as 8-bit Ports. All ports are
both bit- and byte-addressable through their corresponding Port Data registers. All Port pins are 5 V-toler-
ant, and all support configurable Open-Drain or Push-Pull output modes and weak pullups. A block dia-
gram of the Port I/O cell is shown in Figure 17.1. Complete Electrical Specifications for the Port I/O pins
are given in Table 17.1.
Table 17.1. Port I/O DC Electrical Characteristics
V
Output High Voltage
(V
Output Low Voltage
(V
Input High Voltage (VIH)
Input Low Voltage (VIL)
Input Leakage Current
Input Capacitance
DD
OH
OL
PORT-INPUT
/WEAK-PULLUP
PUSH-PULL
/PORT-OUTENABLE
PORT-OUTPUT
ANALOG INPUT
= 2.7 to 3.6 V, –40 to +85 °C unless otherwise specified.
)
)
Parameter
Analog Select
(Ports 1, 2, and 3)
I
I
I
I
I
I
DGND < Port Pin < V
Weak Pullup Off
Weak Pullup On
OH
OH
OH
OL
OL
OL
Figure 17.1. Port I/O Cell Block Diagram
= 8.5 mA
= 10 µA
= 25 mA
= –3 mA, Port I/O Push-Pull
= –10 µA, Port I/O Push-Pull
= –10 mA, Port I/O Push-Pull
Conditions
DD
Rev. 1.5
, Pin Tri-state
C8051F040/1/2/3/4/5/6/7
DGND
V
V
0.7 x V
VDD
DD
DD
Min
—
—
—
—
—
—
—
—
—
– 0.7
– 0.1
DD
V
DD
VDD
Typ
1.0
10
—
—
—
—
—
—
—
—
5
(WEAK)
– 0.8
0.3 x V
Max
0.6
0.1
± 1
—
—
—
—
—
—
—
—
DD
PORT
PAD
Units
µA
pF
V
V
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