M501 查看數據表（PDF） - Siemens AG

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M501

8-Bit Single-Chip Microcontroller

Siemens AG 

Listed below is a summary of the main features of the C501:

• Fully compatible to standard 8051 microcontroller

• Versions for 12/24/40 MHz operating frequency

• Program memory : completely external (C501-L)

8K × 8 ROM (C501-1R)

8K × 8 OTP memory (C501-1E)

• 256 × 8 RAM

• Four 8-bit ports

• Three 16-bit timers / counters (timer 2 with up/down counter feature)

• USART

• Six interrupt sources, two priority levels

• Power saving modes

• Quick Pulse programming algorithm (C501-1E only)

• 2-Level program memory lock (C501-1E only)

• P-DIP-40, P-LCC-44, and P-MQFP-44 package

• Temperature ranges : SAB-C501

SAF-C501

TA : 0 ˚C to 70 ˚C

TA : – 40 ˚C to 85 ˚C

Introduction

C501

XTAL1

XTAL2

RESET

EA/VPP

ALE/PROG

PSEN

Figure 1-2

Logic Symbol

Semiconductor Group

VCC VSS

C501

MCL03217

Port 0

8-Bit Digital Ι /O

Port 1

8-Bit Digital Ι /O

Port 2

8-Bit Digital Ι /O

Port 3

8-Bit Digital Ι /O

1-2

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