ST72F621L4M1 STMicroelectronics, ST72F621L4M1 Datasheet - Page 40

• Manufacturer Part Number: ST72F621L4M1
• Description: IC MCU 8BIT LS 16K 34-SOIC
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F621L4M1

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 34-SOIC (7.5mm Width)
• Processor Series: ST72F6x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SCI, SPI, USB
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: In Transition
• Other names: 497-2112-5

ST7262xxx
9.3 MISCELLANEOUS REGISTER
MISCELLANEOUS REGISTER
Read Write
Reset Value - 0000 0000 (00h)
Bits 7:4 = Reserved
Bits 3:2 = SMS[1:0] Slow Mode Selection
These bits select the Slow Mode frequency (de-
pending on the oscillator frequency configured by
option byte).
40/139
OSC12/6
f
f
OSC
OSC
7
-
= 6 MHz.
= 12 MHz.
-
-
SMS1 SMS0
0
0
1
1
0
0
1
1
-
0
1
0
1
0
1
0
1
SMS1 SMS0
Slow Mode Frequency
(MHz.)
0.5
BOE
US-
4
2
1
8
4
2
1
MCO
0
Doc ID 6996 Rev 5
Bit 1 = USBOE USB Output Enable
0: PA0 port free for general purpose I/O
1: USBOE alternate function enabled. The USB
Bit 0 = MCO Main Clock Out
0: PB0 port free for general purpose I/O
1: MCO alternate function enabled (f
output enable signal is output on the PA0 port
(at “1” when the ST7 USB is transmitting data).
PB0 I/O port)
CPU
output on