ST72F521AR9TC STMicroelectronics, ST72F521AR9TC Datasheet - Page 117
![IC MCU 8BIT 60K FLASH 64-TQFP](/photos/6/76/67655/497-64-tqfp_sml.jpg)
ST72F521AR9TC
Manufacturer Part Number
ST72F521AR9TC
Description
IC MCU 8BIT 60K FLASH 64-TQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST72F521M9T6.pdf
(215 pages)
Specifications of ST72F521AR9TC
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TQFP, 64-VQFP
For Use With
497-6453 - BOARD EVAL BASED ON ST7LNBX
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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I
Acknowledge may be enabled and disabled by
software.
The I
dress can be selected by software.
The speed of the I
between Standard (up to 100KHz) and Fast I
(up to 400KHz).
SDA/SCL Line Control
Transmitter mode: the interface holds the clock
line low before transmission to wait for the micro-
controller to write the byte in the Data Register.
Receiver mode: the interface holds the clock line
low after reception to wait for the microcontroller to
read the byte in the Data Register.
Figure 65. I
2
C BUS INTERFACE (Cont’d)
SCL or SCLI
SDA or SDAI
2
C interface address and/or general call ad-
2
C Interface Block Diagram
2
C interface may be selected
CLOCK CONTROL
CLOCK CONTROL REGISTER (CCR)
DATA CONTROL
STATUS REGISTER 1 (SR1)
STATUS REGISTER 2 (SR2)
CONTROL REGISTER (CR)
2
C
The SCL frequency (F
grammable clock divider which depends on the
I
When the I
ports must be configured as floating inputs. In this
case, the value of the external pull-up resistor
used depends on the application.
When the I
ports revert to being standard I/O port pins.
2
OWN ADDRESS REGISTER 1 (OAR1)
OWN ADDRESS REGISTER 2 (OAR2)
C bus mode.
DATA SHIFT REGISTER
DATA REGISTER (DR)
CONTROL LOGIC
COMPARATOR
INTERRUPT
2
2
C cell is disabled, the SDA and SCL
C cell is enabled, the SDA and SCL
scl
ST72F521, ST72521B
) is controlled by a pro-
117/215
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