Rainbow Electronics AT90SO4 User Manual

Features

General

• High-performance, Low-power secureAVR

• Low Power Idle and Power-Down Modes

• Bond Pad Locations Conforming to ISO 7816-2

• ESD Protection up to ± 4000V

• Operating Range: 2.7V to 5.5V

• Operating Temperature: -25°C to +85°C

• Internal Variable Frequency Oscillator up to 30 Mhz

• Available in Wafers, Modules and standard ROHS packages: SOIC8 or DFN8

TM

Enhanced RISC Architecture

Memory

• 96K bytes of ROM Program Memory

• 4K bytes of EEPROM including 128 OTP bytes and 384 bytes of Bit-addressable Area

– 1 to 64-byte Program/Erase
– 2 ms Program / 2 ms Erase
– Typically More than 500,000 Write/Erase Cycles at a Temperature of 25°C
– 10 Years Data Retention

• 2K bytes of RAM Memory

Peripherals

• ISO 7816 Controller

– Up to 625 kbps at 5 MHz
– Compliant with T = 0 and T = 1 Protocols

• High Speed Master/Slave SPI Serial Interface

– Supports clock up to 20MHz in Slave and Master Mode in typical conditions
– Double Buffering for high performance (16x2 bytes DPRAM buffers)
– DMA Controller for fast transfers between internal DPRAM to RAM

• Hardware Communication Interface Detection

• Two I/O Ports (supporting ISO 7816)

• Programmable Internal Oscillator (Up to 30 MHz for CPU)

• Two 16-bit Timers

• Random Number Generator (RNG)

• 2-level Interrupt Controller

• Hardware DES and Triple DES Engine DPA/DEMA Resistant

• Checksum Accelerator

• Code Signature Module

• CRC 16 & 32 Engine (Compliant with ISO/IEC 3309)

Secure
Microcontroller
for Security
Modules

AT90SO4
Summary

Security

• Dedicated Hardware for Protection Against SPA/DPA/SEMA/DEMA Attacks

• Advanced Protection Against Physical Attack, Including Active Shield

• Environmental Protection Systems (Voltage, Frequency, Temperature, Light

monitors...)

• Secure Memory Management/Access Protection (Supervisor Mode)

Development Tools

• Voyager Emulation Platform (ATV4 Plus) to Support Software Development

• IAR Systems EWAVR

• Software Libraries and Application Notes

®

V5.11B Debugger or Above

Note: This is a summary document. A complete document will be
available under NDA. For more information, please contact your
local Atmel sales office.

6579A–SMS–29Jan10

Part Number

AT90SO4-xxx-P

AT: Atmel
90 : AVR Core
SO : Smart Object
4 : EEPROM Size
xxx : Chip Personalization Number*
P = Z : DFN8 Package

R : SOIC8 Package

* For more details about the Chip Personalization Number, please contact your local ATMEL sales office.

Description

Targeted for low cost security applications, the AT90SO4 is based on the secureAVR architecture that allows the linear addressing of up
to 8M bytes of code and up to 16M bytes of data as well as a number of new functional and security features. It is a low-power, high-per­formance, 8/16-bit microcontroller with ROM program memory, EEPROM data memory based on the secureAVR enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the AT90SO4 achieves throughputs close to 1 MIPS per MHz. Its
Harvard architecture includes 32 general purpose working registers directly connected to the ALU, allowing two independent registers to
be accessed in one single instruction executed in one clock cycle.

The ability to map the EEPROM in the code space allows parts of the program memory to be reprogrammed in-system. This technology
combined with the versatile 8/16-bit CPU on a monolithic chip provides a highly flexible and cost-effective solution to many embedded
security applications.

Additional security features include power and frequency protection logic, logical scrambling on program data and addresses, Power
Analysis countermeasures and memory accesses controlled by a supervisor mode. A block diagram of the AT90SO4 is shown in Figure
1 hereafter.

High-Speed SPI Controller

The AT90SO4 hosts a High Speed SPI interface for full-duplex and synchronous data transfer. When configured as a master, the control­ler provides clock up to 20MHz thanks to the dedicated internal VFO clock system.

A specific DMA contoller allows fast tranfers between DPRAM banks to CPU RAM. The internal DPRAM memory provides 4 DPRAM
buffers of 16 bytes each: 2 for Reception and 2 for Transmission.

The SPI controller features three sources of interrupt (Byte Transmitted, Time-out and Reception Overflow) and a programmable clock
and inter-bytes (guardtime) delays.

2

AT90SO4

6579A–SMS–29Jan10

Figure 1. AT90SO4 secureAVR Enhanced RISC Architecture

Instruction

Decoder

Program

Memory

Instruction

Register

Access
Control

General

Purpose

Registers

X

Y
Z

Status

Register

RAM

Data Memory

Interrupt

Unit

ISO 7816
I/O Port 0

Control

Lines

ALU

EEPROM

User Memory

OTP

PC

Secure
Control

VCC

GND

Access
Control

IN/OUT0

Data Bus

8-bit

RNG

16

16

16

8

88

DES

DPA Counter

measures

Reset

Circuit

RST

ISO 7816
Controller

CRC and

Checksum

Accelerator

Timer 1

Timer 0

ISO7816

I/O Port 1

SPI

Controller

SPI_MISO

SPICLK /
ISOCLK

SPI_MOSI

IN/OUT1 /

SS

AT90SO4

6579A–SMS–29Jan10

3

Pinout and Package Information

2

3

1

4

8

7

6

5

SPI_MISO

VCC

RST

SPI_CLK / ISO_CLK

SPI_MOSI

GND

SPI_SS / IO1

IO0

AT90SO4

DFN8

INDEX CORNER

AT90SO4

SOIC8

INDEX CORNER

SPI_MOSI

GND

I01 / SPI_SS

IO0

1

2

3

4

8

7

6

5

SPI_MISO

VCC

RST

ISO_CLK / SPI_SCK

Figure 2. Pinout AT90SO4 - Package DFN8

Figure 3. Pinout AT90SO4 - Package SOIC8

4

AT90SO4

6579A–SMS–29Jan10

Figure 4. Dual Fleat No Lead Package, 8 leads

AT90SO4

6579A–SMS–29Jan10

5

Figure 5. Plastic Small Outline Package - 8-lead - 0.209” Body

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL

MIN

NOM

MAX

NOTE

Notes: 1. This drawing is for general information only; refer to EIAJ Drawing EDR-7320 for additional information.

2. Mismatch of the upper and lower dies and resin burrs are not included.

3. It is recommended that upper and lower cavities be equal. If they are different, the larger dimension shall be regarded.

4. Determines the true geometric position.

5. Values b and C apply to pb/Sn solder plated terminal.
The standard thickness of the solder layer shall be 0.010 +0.010/-0.005 mm.

A 1.70 2.16

A1 0.05 0.25

b 0.35 0.48 5

C 0.15 0.35 5

D 5.13 5.35

E1 5.18 5.40 2, 3

E 7.70 8.26

L 0.51 0.85

?

0˚ 8˚

e 1.27 BSC 4

End View

Side View

e

b

A

A1

D

E

N

1

C

E1

?

L

Top View

6

AT90SO4

6579A–SMS–29Jan10

Product Marking

39WWzzz
LLLLL
YYMM

39: Chip Identification Number
WW: ROM Code
zzz: Chip Personalization Number
LLLLL : Lot Number
YYMM : Date Code

39WWzzz
LLLLL
YYMM

39: Chip Identification Number
WW: ROM Code
zzz: Chip Personalization Number
LLLLL : Lot Number
YYMM : Date Code

Figure 1. Package DFN8

AT90SO4

Figure 1. Package SOIC8

6579A–SMS–29Jan10

7

Product Characteristics
Maximum Ratings

Table 1. Absolute Maximum Ratings

Symbol Parameter Min. Max. Unit

V

V

T

E

EEPROM

CC

IN

A

Supply Voltage -0.3 7.5 V

Input Voltage VSS-0.3 VCC+0.3 V

Operating Temperature -25 +85 °C

EEPROM Endurance
for write/erase cycles

500 000

(1)

cycles

V

DataRetent ion

EEPROM Data Reten-

10 Year s

tion Virgin

ESD Electrostatic Dis-

4 kV

charge (HBM)

L

up

Latch-up +/- 200 mA

1. Depends on conditions. Please refer to “EEPROM Reliability & Qualification Specification”
(PE/SPEC/032).

AC/DC Characteristics (2.7V - 5.50V range; T= -2 5°C to +85°C)

Table 2. DC Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

V

Supply Voltage 2.7 5.50 V

CC

Supply Voltage

V

CC

Supply Voltage

Input High Voltage - I/O 0..1
Input High Voltage - ISOCLK

V

IH

Input High Voltage - RST
Input High Voltage - MISO, MOSI

Input Low Voltage - I/O 0..1
Input Low Voltage - ISOCLK

V

IL

Input Low Voltage - RST
Input Low Voltage - MISO, MOSI

Leakage High Current- I/O 0..1
Leakage High Current - ISOCLK

I

IH

Leakage High Current - RST
Leakage High Current - MISO, MOSI

Leakage Low Current - I/O 0..1
Leakage Low Current - ISOCLK

I

IL

Leakage Low Current - RST
Leakage Low Current - MISO, MOSI

5.0V (+/- 10%)

3.0V (+/- 10%)

5V, 3V

5V, 3V

5V, 3V, VIN = V

5V, 3V, VIN = V

4.5

2.7

0.7*V

0.7*V

0.7*V

0.7*Vcc

-0.3

-0.3

-0.3

-0.3

-10

IH

-10

-10

-10

-40

IL

-10

-40

-40

CC

CC

CC

5.0

3.0

5.5

3.3

VCC+0.3

+0.3

V

CC

V

+0.3

CC

+0.3

V

CC

0.2*V

CC

0.2*V

CC

0.2*V

CC

0.2*V

CC

10
10
10
10

10
10
10
10

μA

μA

V

V

V

8

AT90SO4

6579A–SMS–29Jan10

Table 2. DC Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

AT90SO4

Output Low Voltage - I/O 0..1

V

OL

Output Low Voltage - MISO, MOSI

Output High Voltage - I/O 0..1

V

OH

Output High Voltage - MISO, MOSI

Pin Pull-up I/O0, RST, I/O1, MISO,

R

I/O

MOSI

5V, IOL = 1mA
3V, IOL = 1mA

5V, 3V, IOH = 1mA

0
0

0.7*Vcc

0.7*Vcc

0.08*V

0.15*V

Vcc
Vcc

CC

CC

V

V

220 KOhm

Table 3. AC Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

f

External Clock Frequency 1 5 MHz

CLK

f

VFO

f

VFO

Average

t

EEPROM

Variable Frequency Oscillator

Average Variable Frequency
Oscillator

(2)

EEPROM Write Time (erase+write) 1.6 2 2.4 ms

(1)

TrI/O Output Rise Time (HRD Mode)

TfI/O Output Fall Time

1. Please refer to Application Note “How to estimate a performance of a running code “ TPR0231X for the
dependence on temperature, clock jitter and clock dividers.

Expected value at 25°C

Clock Jitter not enabled

5V, 3V

Expected value at 25°C

Clock Jitter enabled

5V, 3V

C

=30pF

out

R

=20kOhm

pullup

C

=30pF

out

R

=20kOhm

pullup

28 31 34 MHz

28 MHz

100 ns

100 ns

Table 4. Security Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

V

V

T

Max

T

Voltage Monitor: High Level

MAX

Detection

Voltage Monitor: Low Level

MIN

Detection

External Frequency Monitor:

f

MAX

High Level Detection

External Frequency Monitor: Low

f

MIN

Level Detection

Temperature Monitor: High Level

MON

Detection

Temperature Monitor: Low Level

MON

Detection

Min

Chip trimmed to operate at 5V,
3V

Duty cycle = 40% to 60%
Running on External Clock

Duty cycle = 40% to 60%
Running on External Clock

5.5 V

2.7

5 MHz

1 MHz

85 °C

-25 °C

V

6579A–SMS–29Jan10

9

Table 5. Icc Characteristics (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

I

cc Run Mode

I

cc Run Mode

Supply Current in Run Mode
f

=5MHz

CLK

Supply Current in Run Mode
f

=30MHz

VFO

5V, 3V
From ROM

5V, 3V
From ROM

6 mA

10 mA

Supply Current add-on when DES is

I

cc DES

running
f

=5MHz

CLK

5V, 3V 4 mA

Supply Current add-on when DES is

I

cc DES

I

cc IDLE

running
f

=30MHz

VFO

Supply Current in IDLE Mode
Clock :5MHz

5V, 3V 10 mA

5V, 3V 2 mA

Supply Current in POWER-DOWN

I

cc POWER-DOWN

Mode

5V, 3V 200 μA

Clock : 1MHz

Supply Current in POWER-DOWN

I

cc POWER-DOWN

Mode

5V, 3V 200 μA

No Clock Running

Table 6. High Speed SPI characteristics in Master Mode (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

t

MISOsetup

t

MISOhold

t

SCKrising

t’

MISOsetup

t’

MISOhold

t

SCKfalling

SCK

MISO Setup time before SCK rises

MISO Hold time after SCK rises

SCK rising to MOSI Delay

MISO Setup time before SCK falls

MISO Hold time after SCK falls

SCK falling to MOSI Delay

Host frequency

C

=10pF

OUT

=20pF

C

OUT

C

=10pF

OUT

=20pF

C

OUT

C

=10pF

OUT

C

=20pF

OUT

C

=10pF

OUT

=20pF

C

OUT

C

=10pF

OUT

=20pF

C

OUT

C

=10pF

OUT

C

=20pF

OUT

C

=10pF

OUT

=20pF

C

OUT

10 ns

10 ns

10 ns

10 ns

10 ns

10 ns

20 MHz

10

AT90SO4

6579A–SMS–29Jan10

Table 7. High Speed SPI characteristics in Slave Mode (2.7V - 5.50V range; T= -25°C to +85°C)

Symbol Parameter Condition Min. Typ. Max. Units

C

=10pF

t

SCKfalling

t

SCKrising

t

MOSIsetup

t

MOSIhold

t’

MOSIsetup

t’

MOSIhold

t

SSsetup

t

dat->dat

SCK

SCK falling to MISO Delay

SCK rising to MISO Delay

MOSI Setup time before SCK rises

MOSI Hold time after SCK rises

MOSI Setup time before SCK falls

MOSI Hold time after SCK falls

SS Setup time

Interbyte delay

Slave frequency

C

C
C

C
C

C
C

C
C

C
C

C
C

C
C

C
C

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

=20pF

=10pF
=20pF

=10pF
=20pF

=10pF
=20pF

=10pF
=20pF

=10pF
=20pF

=10pF
=20pF

=10pF
=20pF

=10pF
=20pF

13 ns

13 ns

10 ns

10 ns

10 ns

10 ns

10 ns

10 ns

20 MHz

AT90SO4

6579A–SMS–29Jan10

11

12

AT90SO4

6579A–SMS–29Jan10

6579A–SMS–29Jan10

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