ATAM510X-ILQY ATMEL [ATMEL Corporation], ATAM510X-ILQY Datasheet - Page 26
ATAM510X-ILQY
Manufacturer Part Number
ATAM510X-ILQY
Description
MARC4 4-bit MTP Universal Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATAM510X-ILQY.pdf
(72 pages)
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3.2.4
26
ATAM510
Bi-directional Port 5, Port 7 and Port C
Figure 3-2.
All bi-directional ports except Port 0 and Port 1, include a bit wise programmable Data Direction
Register (PxDDR) which allows the individual programming of each port bit as input or output. It
also enables the reading of the pin condition in output mode.
The bi-directional Ports 5, 7 and C as well as Port A and Port B are equipped with the same
standard I/O logic. However, Port 5, Port 7 and Port C include standard CMOS input stages,
whereas Port A, Port B and all other digital signal pins have Schmitt trigger inputs. Port 5 and
Port 7 have high current output drive capability for up to 20 mA at 5 V. Whereby the instanta-
neous sum of the output currents should not exceed 100 mA.
Figure 3-3.
I/O Bus
I/O Bus
Master reset
I/O Bus
Bi-directional Port 0 and 1
Bi-directional Ports 5, 7, A, B and C
Master reset
OUT
IN
I/O Bus
(Direction)
(Data out)
PxDDRy
PxDATy
D
D
S
S
Q
Q
Port A and Port B with Schmitt trigger
(Data out)
(Direction)
PxDATy
D
S
R
Reset
R
NQ
Q
Q
(1)
Flash options
(1)
Flash options
Port 1 only
(1)
(1)
V
DD
(1)
(1)
Pull-up
(1)
(1)
Pull-down
V
DD
V
DD
(1)
(1)
Pull-down
Pull-up
(1)
(1)
BPxy
V
30 k at 5 V
DD
Static
Pull-up
BPxy
Static
Pull-down
4711B–4BMCU–01/05
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