Siemens EF 88H Series Bedienungsanleitung PDF herunterladen (Seite 8)

Semiconductor Group 1-2

Introduction

C501

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 T

: 0 ˚C to 70 ˚C

SAF-C501 T

: – 40 ˚C to 85 ˚C

Figure 1-2

Logic Symbol

MCL03217

8-Bit Digital

Ι /O

C501

Port 0

Port 1

/OΙ8-Bit Digital

Port 2

/OΙ8-Bit Digital

Port 3

/OΙ8-Bit Digital

XTAL1

XTAL2

RESET

ALE/PROG

PSEN

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 120 121

Keine Kommentare

Siemens EF 88H Series Bedienungsanleitung Seite 8