TMPM330FWFG Toshiba, TMPM330FWFG Datasheet - Page 385

• Manufacturer Part Number: TMPM330FWFG
• Description: Microcontrollers (MCU) MCU w/ ARM Cortex-M3 128K FLASH, 8K SRAM
• Manufacturer: Toshiba

Specifications of TMPM330FWFG

• Processor Series: TX03
• Core: ARM Cortex M3
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Product Summaries: Summary
• Lead Free: Yes
• Rohs Compatible Product(s): Available
• Rom (kbytes): 128K
• Rom Type: Flash
• Ram (kbytes): 8K
• Number Of Pins: 100
• Package: LQFP(14×14)
• Vcc: 3V
• Cpu Mhz: 40
• Ssp (ch) Spi: -
• I2c/sio (ch): 3
• Uart/sio (ch): 3
• Usb: -
• Can: -
• Ethernet: -
• External Bus Interface: -
• Cs/wait Controller (ch): -
• Dma Controller: -
• 10-bit Da Converter: -
• 10-bit Ad Converter: 12
• 12-bit Ad Converter: -
• 16-bit Timer / Counter: 10
• Motor / Igbt Control: -
• Real Time Clock: 1
• Watchdog Timer: Y
• Osc Freq Detect: -
• Clock Gear: Y
• Low-power Hold Function: -
• Remote Control Interface: Y
• Hardware Cec Controller: Y
• Comparators: -
• Low-voltage Detector: -
• Etm Hardware Trace: 4-bit
• Lead Free Status / Rohs Status: Details

17.5 Operational Description
17.5.1
The sec. counter operation must be taken into account when using the RTC.
Reading clock data
The RTC incorporates a sec. counter that generates an 1Hz signal from a 32.768 KHz signal.
1. Using 1Hz interrupt
2. Using pair reading
counter. Data can be read correctly if reading data after 1Hz interrupt occurred.
operates carry during reading. To ensure correct data reading, read the clock data twice
as shown below. A pair of data read successively needs to match.
The 1Hz interrupt is generated being synchronized with counting up of the sec.
There is a possibility that the clock data may be read incorrectly if the internal counter
Fig. 17-2 Flowchart of the clock data reading
PAGER<PAGE> = “0”, then
Under development
Clock data reading
Clock data reading
select PAGE0
Page373
1
st
data = 2
(2nd)
Start
(1st)
End
nd
YES
data
NO
TMPM330