ST7FMC1K4T6 STMicroelectronics, ST7FMC1K4T6 Datasheet - Page 60
![MCU 8BIT 16K FLASH 32TQFP](/photos/27/13/271337/tqfp-32_sml.jpg)
ST7FMC1K4T6
Manufacturer Part Number
ST7FMC1K4T6
Description
MCU 8BIT 16K FLASH 32TQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST7FMC2S4T6.pdf
(309 pages)
Specifications of ST7FMC1K4T6
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
LINSCI
Peripherals
LVD, Motor Control PWM, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Processor Series
ST7FMC1x
Core
ST7
Data Bus Width
8 bit
Data Ram Size
768 B
Interface Type
SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
60
Number Of Timers
3
Operating Supply Voltage
4.5 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
ST7MC-KIT/BLDC, ST7MDT50-EMU3, STX-RLINK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 16 Channel
For Use With
497-8402 - BOARD EVAL COMPLETE INVERTER497-8400 - KIT IGBT PWR MODULE CTRL ST7MC497-4734 - EVAL KIT 3KW POWER DRIVER BOARD497-4733 - EVAL KIT 1KW POWER DRIVER BOARD497-4732 - EVAL KIT 300W POWER DRIVER BOARD497-4731 - EVAL KIT PWR DRIVER CONTROL BRD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
497-4866
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Manufacturer
Quantity
Price
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Part Number:
ST7FMC1K4T6
Manufacturer:
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Quantity:
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Part Number:
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ST7MC1xx/ST7MC2xx
10 ON-CHIP PERIPHERALS
10.1 WINDOW WATCHDOG (WWDG)
10.1.1 Introduction
The Window Watchdog is used to detect the oc-
currence of a software fault, usually generated by
external interference or by unforeseen logical con-
ditions, which causes the application program to
abandon its normal sequence. The Watchdog cir-
cuit generates an MCU reset on expiry of a pro-
grammed time period, unless the program refresh-
es the contents of the downcounter before the T6
bit becomes cleared. An MCU reset is also gener-
ated if the 7-bit downcounter value (in the control
register) is refreshed before the downcounter has
reached the window register value. This implies
that the counter must be refreshed in a limited win-
dow.
10.1.2 Main Features
■
■
Figure 34. Watchdog Block Diagram
60/309
1
Programmable free-running downcounter
Conditional reset
– Reset (if watchdog activated) when the down-
– Reset (if watchdog activated) if the downcoun-
counter value becomes less than 40h
RESET
f
OSC2
MCC/RTC
11
MSB
Write WDGCR
RTC COUNTER
12-BIT MCC
T6:0 > W6:0 CMP
comparator
DIV 64
= 1 when
6
5
LSB
WDGA
-
0
TB[1:0] bits
(MCCSR
Register)
W6
T6
W5
WATCHDOG WINDOW REGISTER (WDGWR)
T5
WATCHDOG CONTROL REGISTER (WDGCR)
■
■
10.1.3 Functional Description
The counter value stored in the WDGCR register
(bits T[6:0]), is decremented every 16384 f
cycles (approx.), and the length of the timeout pe-
riod can be programmed by the user in 64 incre-
ments.
If the watchdog is activated (the WDGA bit is set)
and when the 7-bit downcounter (T[6:0] bits) rolls
over from 40h to 3Fh (T6 becomes cleared), it ini-
tiates a reset cycle pulling low the reset pin for typ-
ically 30μs. If the software reloads the counter
while the counter is greater than the value stored
in the window register, then a reset is generated.
6-BIT DOWNCOUNTER (CNT)
Hardware/Software
(selectable by option byte)
Optional
(configurable by option byte)
ter is reloaded outside the window (see
37)
W4
T4
WDG PRESCALER
DIV 4
W3
T3
reset
W2
T2
on
W1
T1
Watchdog
HALT
W0
T0
instruction
activation
Figure
OSC2
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