ST72F324BJ6B6 STMicroelectronics, ST72F324BJ6B6 Datasheet - Page 42
![MCU 8BIT 32KB FLASH/ROM 42-SDIP](/photos/7/4/70413/497-42-sdip__600_mil__series_sml.jpg)
ST72F324BJ6B6
Manufacturer Part Number
ST72F324BJ6B6
Description
MCU 8BIT 32KB FLASH/ROM 42-SDIP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST72F324BJ6B6.pdf
(193 pages)
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
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Interrupts
7.2.1
42/193
Table 14.
Figure 18. Interrupt processing flowchart
Servicing pending interrupts
As several interrupts can be pending at the same time, the interrupt to be taken into account
is determined by the following two-step process:
●
●
Figure 19
Figure 19. Priority decision process flowchart
Level 0 (main)
Level 1
Level 2
Level 3 (= interrupt disable)
the highest software priority interrupt is serviced,
if several interrupts have the same software priority then the interrupt with the highest
hardware priority is serviced first.
describes this decision process.
Interrupt software priority
RESTORE PC, X, A, CC
Interrupt software priority levels
Reset
from stack
HIGHEST HARDWARE
PRIORITY SERVICED
Same
Y
Pending
I
instruction
Fetch next
nterrupt
I
nstruction
Execute
N
“IRET”
N
INTERRUPTS
SOFTWARE
PRIORITY
PENDING
HIGHEST SOFTWARE
PRIORITY SERVICED
Y
stays pending
The interrupt
Interrupt has the same or a
Level
Different
High
Low
lower software priority
load I1:0 from interrupt SW reg.
than current one
load PC from interrupt vector
Stack PC, X, A, CC
I1
1
0
0
1
TRAP
I1:0
N
ST72324Bxx
Y
I0
0
1
0
1
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