at83c5122 ATMEL Corporation, at83c5122 Datasheet - Page 60
at83c5122
Manufacturer Part Number
at83c5122
Description
At83c5123 C51 Microcontroller With Usb And Smart Card Reader Interfaces
Manufacturer
ATMEL Corporation
Datasheet
1.AT83C5122.pdf
(213 pages)
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60
AT8xC5122/23
Figure 29. LED Source Current
Notes:
Table 35. LED Source Current
Data
Port Latch
LEDx.1
LEDx.0
LEDx.1
0
0
0
0
1
1
1
1
1. When switching a low level, LEDCTRL device has a permanent current of about
2. The port must be configured as standard C51 port by means of PMOD0 and PMOD1
N mA/15 (N is 2, 4 or 8).
registers and the level of current must be programmed by means of LEDCON0 and
LEDCON1 registers before switching the led on.
LEDx.0
0
0
1
1
0
0
1
1
Port Latch Data
0
1
0
1
0
1
0
1
LEDCTRL
NMOS
1
0
0
0
0
0
0
0
NMOS
PIN
0
1
0
1
0
1
0
1
N
N
LED control disabled
LED mode 10 mA
LED mode 2 mA
LED mode 4 mA
Comments
4202E–SCR–06/06
Pin
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