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参数资料
型号： ST62T28CM6
元件分类： 8位微控制器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件页数： 6/84页
文件大小： 969K
代理商： ST62T28CM6
6/84
ST62T28C/E28C
1.2 PIN DESCRIPTIONS
V
and V
. Power is supplied to the MCU via
these two pins. V
is the power connection and
V
SS
is the ground connection.
OSCin and OSCout.
These pins are internally
connected to the on-chip oscillator circuit. A quartz
crystal, a ceramic resonator or an external clock
signal can be connected between these two pins.
The OSCin pin is the input pin, the OSCout pin is
the output pin.
RESET
. The active-low RESET pin is used to re-
start the microcontroller.
TEST/V
.
The TEST must be held at V
for nor-
mal operation. If TEST pin is connected to a
+12.5V level during the reset phase, the EPROM/
OTP programming Mode is entered.
NMI.
The NMI pin provides the capability for asyn-
chronous interruption, by applying an external non
maskable interrupt to the MCU. Schmitt trigger
characteristics. The user can select as option the
availability of an on-chip pull-up at this pin.
PA0-PA5.
These 6 lines are organised as one I/O
port (A). Each line may be configured under soft-
ware control as inputs with or without internal pull-
up resistors, input with interrupt generation and
pull-up resistor, open-drain or push-pull outputs.
PA2/ARTIMout and PA3/ARTIMin can be used re-
spectively as output and input pins for the embed-
ded 8-bit Auto-Reload Timer.
In addition,
PA0-PA5
can sink 20mA for direct LED
or TRIAC drive.
PB4...PB6.
These 3 lines are organised as one I/O
port (B). Each line may be configured under soft-
ware control as inputs with or without internal pull-
up resistors, input with interrupt generation and
pull-up resistor, open-drain or push-pull outputs,
analog inputs for the A/D converter.
PC4-PC7
. These 4 lines are organised as one I/O
port (C). Each line may be configured under soft-
ware control as input with or without internal pull-
up resistor, input with interrupt generation and
pull-up resistor, open-drain or push-pull output.
PC4 and PC5 can also be used as analog input for
the A/D converter, while PC6 and PC7 can sink
20mA for direct LED or TRIAC drive.
PD1...PD7
. These 7 lines are organised as one I/O
port (portD). Each line may be configured under
software control as input with or without internal
pull-up resistor, input with interrupt generation and
pull-up resistor, analog input open-drain or push-
pull output. In addition, the pins PD5/TXD1 and
PD4/RXD1 can be used as UART output (PD5/
TXD1) or UART input (PD4/RXD1). The pins PD3/
Sout, PD2/Sin and PD3/Scl can also be used re-
spectively as data out, data in and clock pins for
the on-chip SPI.
TIMER
. This is the TIMER 1 I/O pin. In input mode,
it is connected to the prescaler and acts as ex-
ternal timer clock or as control gate for the internal
timer clock. In output mode, the TIMER pin outputs
the data bit when a time-out occurs.The user can
select as option the availability of an on-chip pull-
up at this pin.
Figure 2. ST62T28C/E28C Pin Configuration
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
V
DD
TIMER
OSCin
OSCout
NMI
PC7*
PC6*
Ain/PC5
Ain/PC4
TEST/V
PP(1)
RESET
Ain/PB6
Ain/PB5
Ain/PB4
V
SS
PA0*
PA1*
PA2*/ARTIMout
PA3*/ARTIMin
PA4*
PA5*
PD1/Ain/Scl
PD2/Ain/Sin
PD3/Ain/Sout
PD4/Ain/RXD1
PD5/Ain/TXD1
PD6/Ain
PD7/Ain
28
27
26
25
24
23
22
21
(1) V
PP
on EPROM/OTP only
(*) 20 mA Sink
VR01804B
6
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