89C5121-SK1 Atmel, 89C5121-SK1 Datasheet - Page 11

• Manufacturer Part Number: 89C5121-SK1
• Description: KIT SMART CARD FOR AT89C5121
• Manufacturer: Atmel
• Type: Smart Cardr

Specifications of 89C5121-SK1

• Contents: Board
• For Use With/related Products: AT89C5121
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: T89C5121-SK1; T89C5121-SK1

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