ST72521R9 STMicroelectronics, ST72521R9 Datasheet - Page 7

• Manufacturer Part Number: ST72521R9
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72521R9

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

1 INTRODUCTION
The ST72F521 and ST72521B devices are mem-
bers of the ST7 microcontroller family designed for
mid-range applications with a CAN bus interface
(Controller Area Network).
All devices are based on a common industry-
standard 8-bit core, featuring an enhanced instruc-
tion set and are available with FLASH or ROM pro-
gram memory.
Under software control, all devices can be placed
in WAIT, SLOW, ACTIVE-HALT or HALT mode,
Figure 1. Device Block Diagram
RESET
OSC1
OSC2
V
(8-bits)
(8-bits)
PF7:0
V
(8-bits)
PD7:0
PE7:0
AREF
EVD
V
V
V
TLI
SSA
DD
SS
PP
MCC/RTC/BEEP
8-BIT CORE
10-BIT ADC
CONTROL
TIMER A
PORT E
PORT D
PORT F
BEEP
OSC
CAN
ALU
LVD
AVD
SCI
reducing power consumption when the application
is in idle or stand-by state.
The enhanced instruction set and addressing
modes of the ST7 offer both power and flexibility to
software developers, enabling the design of highly
efficient and compact application code. In addition
to standard 8-bit data management, all ST7 micro-
controllers feature true bit manipulation, 8x8 un-
signed multiplication and indirect addressing
modes.
Related Documentation
AN1131: Migrating applications from ST72511/
311/314 to ST72521/321/324
1
On some devices only, see Device Summary on page 1
(1024-2048 Bytes)
(32K - 60K Bytes)
WATCHDOG
PROGRAM
PWM ART
MEMORY
PORT G
PORT H
TIMER B
PORT A
PORT B
PORT C
RAM
I2C
SPI
1
1
ST72F521, ST72521B
(8-bits)
(8-bits)
(8-bits)
(8-bits)
(8-bits)
PG7:0
PA7:0
PB7:0
PC7:0
PH7:0
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