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Q67120-C1001

8-Bit CMOS Microcontroller

Infineon Technologies 

8-Bit CMOS Microcontroller

Preliminary

• 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)

• 256 × 8 RAM

• Four 8-bit ports

8K × 8 OTP memory (C501-1E)

• 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

C501

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

C501G Functional Units

Semiconductor Group

3

1997-04-01

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