MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1491

• Manufacturer Part Number: MCIMX286CVM4B
• Description: IC MPU I.MX286 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX286CVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

Address:
Re-
22.8.6 Watchdog Timer Register (HW_RTC_WATCHDOG)
The 32-bit watch dog timer can be used to reset the chip if enabled and not adequately
serviced.
HW_RTC_WATCHDOG: 0x050
HW_RTC_WATCHDOG_SET: 0x054
HW_RTC_WATCHDOG_CLR: 0x058
HW_RTC_WATCHDOG_TOG: 0x05C
The 32-bit watchdog timer will reset the chip upon decrementing to zero, if this function is
enabled and present on the chip. The 1-kHz source is based on a msec pulse from RTC
analog which is derived from the 24-MHz crystal oscillator and hence does not vary when
the APBX clock is changed.
EXAMPLE
Address:
Re-
Freescale Semiconductor, Inc.
set
set
Bit
Bit
W
W
chip
R
R
31
31
0
1
VALUE
Field
31 0
30
30
0
1
29
29
0
1
HW_RTC_ALARM
HW_RTC_WATCHDOG
28
28
0
1
HW_RTC_WATCHDOG_WR(10000);
Seconds match-value used to trigger assertion of the RTC alarm.
27
27
0
1
26
26
0
1
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
25
0
1
24
24
0
1
23
23
0
1
8005_6000h base + 40h offset = 8005_6040h
HW_RTC_ALARM field descriptions
22
22
0
1
8005_6000h base + 50h offset = 8005_6050h
21
21
0
1
20
20
0
1
19
19
0
1
18
18
0
1
// reload the watchdog and keep it from resetting the
17
17
0
1
COUNT
VALUE
Chapter 22 Real-Time Clock Alarm Watchdog Persistent Bits
16
16
0
1
15
15
0
1
Description
14
14
0
1
13
13
0
1
12
12
0
1
11
11
0
1
10
10
0
1
0
1
9
9
0
1
8
8
0
1
7
7
0
1
6
6
0
1
5
5
0
1
4
4
3
0
3
1
0
1
2
2
0
1
1
1
1491
0
1
0
0