UPD78F0555MA-FAA-AX Renesas Electronics America, UPD78F0555MA-FAA-AX Datasheet - Page 348

• Manufacturer Part Number: UPD78F0555MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0555MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2-L
7.5 Cautions for 8-Bit Timer/Event Counters 50 and 51
(1) Timer start error
(2) Reading of 8-bit timer counter 5n (TM5n)
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
Remark 78K0/KY2-L, 78K0/KA2-L: n = 1
An error of up to one clock may occur in the time required for a match signal to be generated after timer start. This is
because 8-bit timer counters 50 and 51 (TM50, TM51) are started asynchronously to the count clock.
TM5n can be read without stopping the actual counter, because the count values captured to the buffer are fixed
when it is read. The buffer, however, may not be updated when it is read immediately before the counter counts up,
because the buffer is updated at the timing the counter counts up.
TM5n count value
Read signal
Count clock
Read buffer
78K0/KB2-L, 78K0/KC2-L: n = 0, 1
TM5n count value
Count clock
Figure 7-20. 8-Bit Timer Counter 5n (TM5n) Start Timing
Figure 7-21. 8-bit Timer Counter 5n (TM5n) Read Timing
34H
34H
35H
00H
Timer start
CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51
35H
36H
01H
37H
37H
02H
38H
03H
38H
39H
04H
3AH
3BH
3BH
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