UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 278

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

6.5 Special Use of TM00
6.5.1 Rewriting CR010 during TM00 operation
registers is prohibited while TM00 is operating (TMC003 and TMC002 = other than 00).
CR010 is used for PPG output and the duty factor is changed. (When changing the value of CR010 to a smaller value
than the current one, rewrite it immediately after its value matches the value of TM00. When changing the value of
CR010 to a larger value than the current one, rewrite it immediately after the values of CR000 and TM00 match. If the
value of CR010 is rewritten immediately before a match between CR010 and TM00, or between CR000 and TM00, an
unexpected operation may be performed.).
6.5.2 Setting LVS00 and LVR00
(1) Usage of LVS00 and LVR00
278
In principle, rewriting CR000 and CR010 of the 78K0/Kx2-L microcontrollers when they are used as compare
However, the value of CR010 can be changed, even while TM00 is operating, using the following procedure if
Remark For TMIF010 and TMMK010, refer to CHAPTER 17 INTERRUPT FUNCTIONS.
Procedure for changing value of CR010
<1> Disable interrupt INTTM010 (TMMK010 = 1).
<2> Disable reversal of the timer output when the value of TM00 matches that of CR010 (TOC004 = 0).
<3> Change the value of CR010.
<4> Wait for one cycle of the count clock of TM00.
<5> Enable reversal of the timer output when the value of TM00 matches that of CR010 (TOC004 = 1).
<6> Clear the interrupt flag of INTTM010 (TMIF010 = 0) to 0.
<7> Enable interrupt INTTM010 (TMMK010 = 0).
LVS00 and LVR00 are used to set the default value of the TO00 output and to invert the timer output without
enabling the timer operation (TMC003 and TMC002 = 00). Clear LVS00 and LVR00 to 00 (default value: low-
level output) when software control is unnecessary.
LVS00
0
0
1
1
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
Preliminary User’s Manual U19111EJ2V1UD
LVR00
0
1
0
1
Not changed (low-level output)
Cleared (low-level output)
Set (high-level output)
Setting prohibited
Timer Output Status