ST72F324BJ6B6 STMicroelectronics, ST72F324BJ6B6 Datasheet - Page 78

• 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

On-chip peripherals
Note:
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External clock
The external clock (where available) is selected if CC0 = 1 and CC1 = 1 in the CR2 register.
The status of the EXEDG bit in the CR2 register determines the type of level transition on
the external clock pin EXTCLK that will trigger the free running counter.
The counter is synchronized with the falling edge of the internal CPU clock.
A minimum of four falling edges of the CPU clock must occur between two consecutive
active edges of the external clock; thus the external clock frequency must be less than a
quarter of the CPU clock frequency.
Figure 38. Counter timing diagram, internal clock divided by 2
Figure 39. Counter timing diagram, internal clock divided by 4
Figure 40. Counter timing diagram, internal clock divided by 8
The MCU is in reset state when the internal reset signal is high, when it is low the MCU is
running.
Timer Overflow Flag (TOF)
Timer Overflow Flag (TOF)
Timer Overflow Flag (TOF)
Counter register
Internal reset
Counter register
Counter register
Timer clock
CPU clock
Internal reset
Internal reset
Timer clock
Timer clock
CPU clock
CPU clock
FFFC
FFFC
FFFD FFFE FFFF 0000 0001 0002 0003
FFFD
FFFD
0000
0001
0000
ST72324Bxx