Renesas M34519T-MCU 4.5 A-D Converter

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(3) Port I/O Characteristics

With the M34519T-MCU, port I/O characteristics are different from actual MCUs because there

are emulation circuits in ports P00--P03, P10--P13 and D0--D5. Table 4.2 lists port I/O

characteristics of the M34519T-MCU.

Table 4.2 Emulation port I/O characteristics

*1 According to the setting of the output method control register FRx, change its device for output

in the emulation circuit.

• When N-ch open drain output chosen: 74ALS641

• When CMOS output chosen: 74VHC125

4.5 A-D Converter

For the M34519T-MCU, its voltage is fixed at 3 V or 5 V. Therefore, because of the difference of

voltage, the results of its A/D conversions are slightly different from the theoretical values. And, some

characteristics are different from those of actual MCUs, because a flat cable and pitch converter board

and other devices are used between the evaluation MCU and target system.

VOL

IOL

Port

P0, P1,

D0--D5

Input 74HC245

Device Item Condition

VCC = 2.0 V

VCC = 4.5 V

VCC = 2.0 V

VCC = 4.5 V

VCC = 4.5 V

VCC = 5.0 V

VCC = 3.0 V

VCC = 4.5 V

VCC = 3.0 V

VCC = 4.5 V

VCC = 2.0 V

VCC = 4.5 V

VCC = 4.5 V

VCC = 12 V

VCC = 12 V

Min.

1.50 V

3.15 V

-

-

-

-

2.48 V

3.94 V

-

-

-

-

-

-

-

Max.

-

-

0.50 V

1.35 V

0.5 V

48 mA

-

-

0.44 V

0.44 V

-

200 Ω

-

±1 µA

±1 µA

Remarks

I

OH

= -4 mA

I

OH

= -8 mA

I

OL

= 4 mA

I

OL

= 8 mA

VIH

VIL

VOH

VOL

RON

RON

IOFF

IZ

74ALS641

74VHC125

74HC4066

Output*1

Input/

Output

P21, P22

Standard

-

-

-

-

0.35 V

-

-

-

-

-

160 Ω

96 Ω

10 Ω

-

-

Contents

Main Page Page Contents Chapter 1. Precautions for Safety WARNING IMPORTANT CAUTION WARNING Warning for Installation: Warning for Use Environment: Cautions to Be Taken for This Product: Notes on Differences between Actual MCUs and the Emulator: Note on MCU board Installation: Note on Registers that Can be Operated from M3T-PD45 Notes on Connecting the Target System: Page Chapter 2. Package Contents 2.1 Contents of the M34519T-MCU Notes on Components of this Product: 2.2 Other Necessary Products Chapter 3. M34519T-MCU 3.1 Outline 3.2 Specifications Table 3.1 lists specifications of the M34519T-MCU. Table 3.1 M34519T-MCU specifications 3.3 Switches Before changing switch settings, be sure to shut off the power. Caution for Setting the Switches: 3.4 Check Pins Figure 3.3 Positions of the check pins 3.5 Connectors Table 3.4 lists the functions of the connectors of the M34519T-MCU. Table 3.4 Connectors Figure 3.4 Connector J3 pin layout Notes on Connecting the Evaluation MCU and Target System: Notes on Changing a Clock Frequency: 3.6 Connection to the Target System Connections of the M34519T-MCU and target systems are shown in Figure 3.7 below. Figure 3.7 Connections to target systems Note on Connecting the Target System: Page Page 3.7 How to Replace the MCU Cautions for Replacing the MCU: 4.2 Watchdog Timer Figure 4.1 Waveform output from check pin TP5 Chapter 4. Precautions to Be Taken for Debugging a Program 4.1 Reset 4.3 RAM Backup Mode 4.4 Port I/O Timings 4.5 A-D Converter 4.7 Real-time Capability of the Timer 4.8 Pullup Transistor Control 4.6 System Clock 4.9 Program Execution (G, GB) 4.10 External Trigger Signal 4.11 Other Precautions Page Page Chapter 6. Pitch Converter Board External Dimensions Page Chapter 7. Maintenance and Guarantee 7.1 Maintenance 7.2 Guarantee 7.3 Repair Provisions 7.4 How to Request for Repair Note on Transporting the Product: