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Philips

83C852 Datasheet Preview

83C852 Datasheet

Secured 8-bit microcontroller

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Signetics Mlcrocontroller Products
Secured 8-bit microcontroller
Preliminary specification
83C852
FEATURES
• 8-bit CPU
• 6K bytes of user program memory (ROM), no external
extension
• 256 bytes of RAM data memory (RAM), no external
extension
• 2K bytes EEPROM:
- EEPROM stores data or program
- on-chip voltage multiplier for EEPROM
ERASEIWRITE
- ERASEIWRITE cycle time independent of the clock
frequency
10000 ERASEIWRITE cycles per bytes
10 years non-volatile data retention
infinite number of READ cycles
error code correction
• Calculation unit for cryptographic calculations
• Security features
• Power-ON/OFF reset circuit
• low frequency detector
• Two 16-bit timers
• Clock frequency range 1 MHz to 6 MHz; 1 Ils cycle
time with 6 MHz clock frequency
• Two 1/0 lines; only one 1/0 line is used in half-duplex,
according to the ISO standards for the Smart Card
applications; full-duplex communication can be
performed with both 1/0 lines
• 5 interrupt sources from: I/O lines; nmer 0; nmer l'
EEPROM; Calculation unit
• Power-down and idle mode
• Two operating modes: test mode and user mode
• Single 5 volts power supply
• 6 pins: Voo ' Vss ' 1/01, 1/02, RESET, ClK
QUICK REFERENCE DATA
SYMBOL
Voo
100
100
110
Ptot
Tstg
Tamb
PARAMETER
supply voltage range
supply current
supply current: operating modes
supply current: idle mode
total power dissipation
storage temperature range
operating ambient temperature range
GENERAL DESCRIPTION
The 83C852 single chip secured microcontroller is
manufactured in an advanced 1.2 IlCMOS process. It is
a derivative of the 80C51 microcontroller family and has
the same instruction set as the 80C51. It has been
specially designed for conditional access in secure
Smart Card applications and is implemented with the
highest levels of security.
Its internal calculation unit speeds-up cryptographic
calculations using Public Key Algorithms.
Cryptographic calculations
At felK = 6·MHz: Xe mod.n is performed in 1.5 s
typical, with 512 bit operands.
External communications can be performed through a
serial interface (1/0) according to ISO standards. The
serial interface must be controlled by application
software for access to the 83C852 internal memory.
The 83C852 contains a 6K bytes READ only memory
(user ROM); a 256 bytes READIWRITE data memory
(RAM); 2K bytes electrically erasable programmable
READ only memory (EEPROM); two 1/0 lines; two 16-bit
timers; five vectorized interrupt sources; 33 Special
Function Registers (SFRs) and a Calculation Unit to
speed-up the execution time of public keys and secret
keys cryptographic algorithms.
The 83C852 operates with a single 5 volts power supply
and at a maximum clock frequency of 6 MHz. The
instruction set consists of over 100 instructions: 49
one-byte, 45 two-byte and 17 three-byte. With an input
clock frequency of 6 MHz, 58% of the instructions are
executed in 1 Ils and 40% in 2 Ils.
CONDITION
felK = 3.57 MHz
felK = 6.0 MHz
felK = 6.0 MHz
MIN.
4.5
-
-
-
-
--65
0
MAX.
5.5
10
15
3
1
150
70
UNIT
V
mA
mA
mA
W
DC
DC
November 1991
624




Philips

83C852 Datasheet Preview

83C852 Datasheet

Secured 8-bit microcontroller

No Preview Available !

Signetics Microcontroller Products
Secured 8-bit microcontroller
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
83C852 die
83C852P
PADS
6
tbf
PACKAGE
PAD POSITION
X Y coordinates
tbf
Preliminary specification
83C852
MATERIAL
die
plastic DIL
CODE
-
tbf
VSS
II
~~
POWER-ON/OFF
RESET
lOW FREQUENCY
DETECTOR
I
INTERRUPT
SYSTEM
ClK
n
~(CPU
ROM
6 K BYTES
PROGRAM
MEMORY
II
li
CALCULATION
UNIT
RAM
256 BYTES
DATA
MEMORY
II
li
IPROGRAMMABLE
I/O
ii
~~
1/01 1/02
EEPROM
2 K BYTES
DATA &
PROGRAM
MEMORY
f
~
TWO 16-BIT
TIMERS
MBA740
Fig.1 Block diagram.
November 1991
625


Part Number 83C852
Description Secured 8-bit microcontroller
Maker Philips
Total Page 30 Pages
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