ST72F324BJ6B6 STMicroelectronics, ST72F324BJ6B6 Datasheet - Page 169

• Manufacturer Part Number: ST72F324BJ6B6
• Description: MCU 8BIT 32KB FLASH/ROM 42-SDIP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F324BJ6B6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-SDIP (0.600", 15.24mm)
• Controller Family/series: ST7
• No. Of I/o's: 32
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Embedded Interface Type: SCI, SPI
• No. Of Pwm Channels: 3
• Processor Series: ST72F3x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Development Tools By Supplier: ST7232X-EVAL, ST7MDT20-DVP3, ST7MDT20J-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• For Use With: 497-6421 - BOARD EVAL DGTL BATT CHGR DESIGN497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-5589-5

ST72324Bxx
Table 112. 10-bit ADC characteristics (continued)
1. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10kΩ). Data
2. Injecting negative current on adjacent pins may result in increased leakage currents. Software filtering of the converted
Symbol
t
ADC
based on characterization results, not tested in production.
analog value is recommended.
Conversion time (Sample + Hold)
f
f
No. of sample capacitor loading cycles
No. of Hold conversion cycles
CPU
ADC
Figure 84. R
1. C
Figure 85. Recommended C
1. This graph shows that, depending on the input signal variation (f
Figure 86. Typical A/D converter application
= 8 MHz, Speed = 0,
= 2 MHz
the pad capacitance (3 pF). A high C
f
stabilization time and decreased to allow the use of a larger serial resistor (R
ADC
PARASITIC
should be reduced.
Parameter
V
AIN
represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus
AIN
R
max. vs f
AIN
C
AIN
ADC
AINx
AIN
45
40
35
30
25
20
15
10
1000
5
0
100
0.1
with C
PARASITIC
10
1
and R
0
0.01
Conditions
AIN
value will downgrade conversion accuracy. To remedy this,
AIN
V
= 0 pF
DD
10
C
0.1
PARASITIC
values
V
0.6 V
V
0.6 V
f
AIN
T
T
(KHz)
(pF)
(1)
30
1
(1)
2 kΩ (max)
Cain 10 nF
Cain 22 nF
Cain 47 nF
AIN
I
2 MHz
1 MHz
lkg
), C
70
10
Min
AIN
can be increased for
10-bit A/D
conversion
AIN)
Electrical characteristics
Typ
.
7.5
11
4
ST72XXX
Max
C
12 pF
ADC
169/193
1/f
Unit
µs
ADC