M501 查看數據表（PDF） - Siemens AG

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M501

8-Bit Single-Chip Microcontroller

Siemens AG 

Introduction

C501

1 Introduction

The C501-L, C501-1R, and C501-1E described in this document are compatible (also pin-

compatible) with the 80C52 and can be used in typical 80C52 applications.

The C501-1R contains a non-volatile 8K×8 read-only program memory, a volatile 256×8 read/write

data memory, four ports, three 16-bit timers/counters, a seven source, two priority level interrupt

structure and a serial port. The C501-L is identical, except that it lacks the program memory on

chip. The C501-1E contains a one-time programmable (OTP) program memory on chip. The term

C501 refers to all versions within this specification unless otherwise noted.

Power

Saving

Modes

T0

T2

T1

RAM

256 x 8

Port 0

Ι/O

Port 1

Ι/O

CPU

USART

Port 2

Ι/O

8K x 8 ROM (C501-1R)

8K x 8 OTP (C501-1E)

Port 3

Ι/O

MCA03238

Figure 1-1

C501G Functional Units

Semiconductor Group

1-1

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