89C5121-SK1 Atmel, 89C5121-SK1 Datasheet - Page 7

• 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

Table 1. Ports Description (Continued)
4164G–SCR–07/06
Port
P3.5
P3.6
P3.7
P3.7
Signal
CCLK1
CRST1
CRST1
Name
CIO1
Alternate
LED0
LED1
Internal
Supply
Power
DV
DV
DV
DV
CC
CC
CC
CC
ESD
Type
I/O
I/O
I/O
I/O
I/O
O
O
O
O
Z
I
I
I
I
I
Description
Input/Output function
P3.4 is a bi-directional I/O port with internal pull-ups.
Timer 0 function: External clock input
When Timer 0 operates as a counter, a falling edge on the T0 pin
Reset configuration
High impedance due to PMOS switched OFF
Alternate card function
Card I/O
Input/Output function
P3.5 is a bi-directional I/O port with internal pull-ups.
Timer 1 function: External clock input
When Timer 1 operates as a counter, a falling edge on the T1 pin
Reset configuration
Input (high level due to internal pull-up)
Alternate card function
Card clock
LED function
These pins can be directly connected to the cathode of standard
Input/Output function
P3.6 is a LED port.
Reset configuration
Input at high level
Alternate card function
Card reset
LED function
These pins can be directly connected to the cathode of standard
Input/Output function
P3.7 is a a LED port.
Reset configuration
Input at high level
increments the count.
increments the count.
LED without external current limiting resistors. The typical current
of each output can be programmed by software to 2, 4 or 10 mA
(LEDCON register).
LED without external current limiting resistors. The typical current
of each output can be programmed by software to 2, 4 or 10 mA
(LEDCON register).
A/T8xC5121
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