T89C5121-ICUIL Atmel, T89C5121-ICUIL Datasheet - Page 11

• 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

Figure 6. Push-pull Output Configuration
LED Output Configuration
Figure 7. LED Source Current Configuration
Note:
4164G–SCR–07/06
The port can be configured in quasi bi-directional mode and the level of current can be programmed by means of LEDCON0
and LEDCON1 registers before switching the led on by writing a logical 0 in Port latch.
Port latch
Data
Data
Port Latch
LEDx.0
LEDx.1
2 CPU
CLOCK DELAY
The input only configuration is shown in Figure 7.
Input
Data
Input
Data
NMOS
PMOS
LED1CTRL
LED2CTRL
NMOS
PMOS
N
P
P
Strong
Strong
N
N
N
P
Weak
P
Medium
A/T8xC5121
Pin
Pin
11