C8051F124TB Silicon Laboratories Inc, C8051F124TB Datasheet - Page 235

• Manufacturer Part Number: C8051F124TB
• Description: MCU, MPU & DSP Development Tools With C8051F124 MCU
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F124TB

• Processor To Be Evaluated: C8051F12x and C8051F13x
• Interface Type: USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18. Port Input/Output
The devices are fully integrated mixed-signal System on a Chip MCUs with 64 digital I/O pins (100-pin
TQFP packaging) or 32 digital I/O pins (64-pin TQFP packaging), 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 18.1. Complete Electrical Specifications for the Port I/O pins
are given in Table 18.1.
/WEAK-PULLUP
PUSH-PULL
/PORT-OUTENABLE
PORT-OUTPUT
ANALOG INPUT
PORT-INPUT
Analog Select
(Ports 1, 2, and 3)
Figure 18.1. Port I/O Cell Block Diagram
Rev. 1.4
C8051F120/1/2/3/4/5/6/7
DGND
VDD
C8051F130/1/2/3
VDD
(WEAK)
PORT
PAD
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