ST52T440F3M6 STMicroelectronics, ST52T440F3M6 Datasheet - Page 52

• Manufacturer Part Number: ST52T440F3M6
• Description: MCU 8-Bit ST52 CISC 8KB EPROM 5V 20-Pin SO
• Manufacturer: STMicroelectronics

Specifications of ST52T440F3M6

• Package: 20SO
• Family Name: ST52
• Maximum Speed: 20 MHz
• Ram Size: 256 Byte
• Program Memory Size: 8 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 13
• On-chip Adc: 6-chx12-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 1

ST52T400/T440/E440/T441
The four modes are selected by configuring
REG_CONF1[(2)] to choose among the conver-
sion of a single channel or a sequence of chan-
nels and REG_CONF1[(1)] to
conversion once or continuously.
REG_CONF1[(5:3)] bits allows the user to choose
the channel to be converted in Single Channel
mode or the last channel to be converted (starting
from AC0) in Multiple Channels mode.
To start the conversion, REG_CONF16[(0)] must
be set to “1” and to “0” to stop it.
Note: in Single conversion modes, the Start bit
REG_CONF16[(0)] must be reset to 0 before
starting another conversion; in Comparator Mode
it must be set to ‘”0”.
Table 7.1 Configuration Register 1
Reset Configuration Value = “00000000”
Table 7.2 Configuration Register 15
Reset Configuration Value = “00000000”
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Bit
7:0
0
1
2
3
4
5
6
7
Bit
CONV
REFM
CHAN
NBCV
Name
SEQ
PRES(7:0)
Name
Value
000
001
010
011
100
101
110
111
00
01
10
11
0
1
0
1
0
1
Continuous Conversion
Timer Prescaler (7:0)
Single Conversion
Three Conversion
Convert only data
Convert data and
Multiple Channel
One Conversion
Two Conversion
reference value
Single Channel
Channel 0 AC0
Channel 1 AC1
Channel 2 AC2
Channel 3 AC3
Channel 4 AC4
Channel 5 AC5
Description
Description
Not Used
Not used
Not used
perform
the
The Analog Comparator in A/D Converter Mode
supplies an interrupt source. The interrupt signal
can be generated either after the end of the each
channel conversion (REG_CONF3[(4)]=0) or after.
the
(REG_CONF3[(4)]=1).
Table 7.3 Configuration Register 3
Reset Configuration Value = “00000000”
Table 7.4 Configuration Register 16
Reset Configuration Value = “00000000”
Bit
Bit
7:4
0
1
2
3
4
5
6
7
0
1
2
3
end
Name
PRES(11:8
STRT
UPDW
MODE
ADM
Name
REFV
OD
CUR
POL
INT
of
Not used
Value
the
Value
0
1
0
1
000
001
010
100
101
011
110
111
0
1
0
1
0
1
0
1
0
1
Timer Prescaler (11:8)
conversion
External ramp generator
A/D Converter Stopped
A/D Converter Started
Interrupt after the end
Current generator off
10 A charge current
20 A charge current
30 A charge current
40 A charge current
50 A charge current
60 A charge current
70 A charge current
Reference = 2.42 V
Interrupt after each
Reference= GNDA
Comparator Mode
Capacitor ramp
of the conversion
Falling crossing
Rising crossing
Description
Down Counter
Description
Up Counter
conversion
A/D Mode
cycle
sequence