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DS5240

3 of 3

ORDERING INFORMATION

PART

PIN-PACKAGE

MAX CLOCK

SPEED (MHz)

TEMP. RANGE

DS5240F-825

80-Plastic MQFP

25

0

°C to +70°C

DS5240F-125

100-Plastic MQFP

25

0

°C to +70°C

DS5240F-8N5

80-Plastic MQFP

25

-40

°C to +85°C

DS5240F-1N5

100-Plastic MQFP

25

-40

°C to +85°C

Figure 1. BLOCK DIAGRAM

True

Time

Clock

Serial

Ports

0,1

Stack

Pointer

User

DES

Engine

Modulo

Arithmetic

Accel.

Timers

0,1,2

ROM

Loader

Internal

Registers

CPU

Instruction

Decoder

and

Controls

CRC

Generator

Interrupt

Logic

PC &

DPTRs

Watchdog &

Power

Control

Instruction

Cache

Internal

SRAM

3K x 8

1K x 8

1K x 8

RESET

Power &

Temperature

Monitor

CLOCKS

MMU

I/O Ports

Program

Memory

Cryptographic

Module

Data

Memory

Cryptographic

Module

Byte-Wide Bus Interface

RTCX1

RTCX2

GND2

Internal Control/Data Bus

Internal Address Bus

8

8

8

21

8

8

8

8

6

P0 P1 P2 P3 P4

2

8

21

24

4

PE3,4 & CExN

6

Random

Number

Generator