mtc20136pq STMicroelectronics, mtc20136pq Datasheet - Page 21

• Manufacturer Part Number: mtc20136pq
• Description: Adsl Transceiver Controller
• Manufacturer: STMicroelectronics

Peripherals
UART
Two identical UARTs are implemented in MTC20136. They offer similar functionality to the standard
16C550 device. They can support bit rates of up to 115.2 K bps and contain two 16 byte FIFOs for receive
and transmit.
General purpose I/Os
Four pins are available for general purpose IOs, two are used as inputs to specify the boot configuration
and two are output under SW control. The latter can be used for instance to drive external LEDs.
Reset
The MTC20136 has an asynchronous, active-low reset pin. An external clock is required to leave the reset
state.
Clock
The MTC20136 is operated from the 35.328MHz Master clock, also used by the other DynaMiTe chips.
ELECTRICAL SPECIFICATIONS
Generic
The values presented in the following table apply for all inputs and/or outputs unless specified otherwise.
Specifically they are not influenced by the choice between CMOS or TTL levels.
Table 10. IO buffers generic DC characteristics
Table 11. IO buffers dynamic characteristics
DC Electrical Characteristics
All voltages are referenced to VSS, unless otherwise specified, positive current is towards the device
DC Electrical Characteristics, important for transient but measured at (near) DC
All voltages are referenced to VSS, unless otherwise specified, positive current is towards the device
Symbol
Symbol
C
dI/dt
I
R
R
C
peak
I
I
I
I
OUT
OZ
PU
PD
IN
PU
PD
IN
Input capacitance
Current derivative
Peak current
Output capacitance
(also bidirectional and
tristate drivers)
Input leakage current
Tristate leakage
current
Pull up current
Pull down current
Pull up resistance
Pull down resistance
Parameter
Parameter
@f = 1MHz
8 mA driver, slew rate control
8 mA driver, no slew rate control
8 mA driver, slew rate control
8 mA driver, no slew rate control
@f = 1MHz
V
pull up/pull down
V
pull up/pull down
V
V
V
V
IN
IN
IN
IN
IN
IN
=
=
= V
= V
=
= V
Test Conditions
V
V
V
SS
SS
SS
SS
DD
DD
Test Conditions
, V
, V
DD
DD
, no
, no
Min
-25
25
-1
-1
Min
Typ
-66
66
50
50
23.5
Typ
100
89
85
Max
-125
125
1
1
Max
5
7
MTC20136
kOhm
kOhm
Unit
µA
µA
µA
µA
mA/ns
mA/ns
Unit
mA
mA
pF
pF
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