T89C5121-ICUIL Atmel, T89C5121-ICUIL Datasheet - Page 8

• Manufacturer Part Number: T89C5121-ICUIL
• Description: IC 8051 MCU W/SMART CARD 24SSOP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of T89C5121-ICUIL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SmartCard, UART/USART
• Peripherals: LED, POR, WDT
• Number Of I /o: 14
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: Flash RAM
• Eeprom Size: 16K x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 5.4 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: Q1468934; T89C5121-ICSIL; T89C5121-ICSIL

Table 1. Ports Description (Continued)
8
XTAL1
XTAL2
CVSS
Port
CV
DV
EV
RST
VSS
V
LI
CC
CC
CC
CC
A/T8xC5121
Signal
Name
Alternate
Internal
Supply
Power
V
V
V
V
CC
CC
CC
CC
ESD
Type
PWR
PWR
PWR
PWR
PWR
GND
GND
I/O
O
I
Description
Reset input
Holding this pin low for 64 oscillator periods while the oscillator
is running resets the device. The Port pins are driven to their reset
conditions when a voltage lower than V
not the oscillator is running.
This pin has an internal pull-up resistor which allows the device to be reset by
connecting a capacitor between this pin and VSS.This capacitor is optional
thanks to the internal POR which output a Reset as long as Vcc has not
reached the POR threshold level
Asserting RST when the chip is in Idle mode or Power-down mode
returns the chip to normal operation.
The output is active for at least 12 oscillator periods when an internal
reset occurs.
Input to the on-chip inverting oscillator amplifier
To use the internal oscillator, a crystal/resonator circuit is connected
to this pin.
If an external oscillator is used, its output is connected to this pin.
Output of the on-chip inverting oscillator amplifier
To use the internal oscillator, a crystal/resonator circuit is connected
to this pin.
If an external oscillator is used, XTAL2 may be left unconnected.
Supply voltage
V
DC/DC input
LI must be tied to V
the current for the pump charge of the DC/DC converter.
Card Supply voltage
CV
It must be connected to an external decoupling capacitor.
Digital Supply voltage
DV
internally connected to the output of a 3V regulator and must be connected to
an external decoupling capacitor.
Extra supply voltage
EV
pins. It must be connected to an external decoupling capacitor.
This reference voltage is generated internally (automatically or not),
or it can be connected to an external voltage reference.
DC/DC ground
CVSS is used to sink high shunt currents from the external coil.
Ground
CC
CC
CC
CC
is used to power the internal voltage regulators and internal I/O’s.
is used to supply the level shifters of UART interface I/O
is the programmable voltage output for the Card interface.
is used to supply the digital core and internal I/Os. It is
CC
through an external coil (typically 4, 7 H) and provide
IL
is applied, whether or
4164G–SCR–07/06