UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 401

• Manufacturer Part Number: UPD78F0551MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0551MA-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: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 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
10.4.2 Shifting to STOP mode after starting operation
interrupt has occurred.
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
• Shifting to STOP mode when at least two subsystem clocks (f
• Checking by polling RWST to become 1, after setting RTCE to 1 and then setting RWAIT to 1. Afterward, setting
Perform one of the following processing when shifting to STOP mode immediately after setting RTCE to 1.
However, after setting RTCE to 1, this processing is not required when shifting to STOP mode after the first INTRTC
(see Figure 10-20, Example 1).
RWAIT to 0 and shifting to STOP mode after checking again by polling that RWST has become 0 (see Figure 10-20,
Example 2).
Waiting at least for 2
STOP mode
f
RTCE = 1
SUB
clocks
Example 1
Figure 10-20. Procedure for Shifting to STOP Mode After Setting RTCE to 1
Sets to counter operation
start
Shifts to STOP mode
No
No
SUB
RWST = 1 ?
RWST = 0 ?
STOP mode
) (about 62
RWAIT = 1
RWAIT = 0
RTCE = 1
Yes
Yes
CHAPTER 10 REAL-TIME COUNTER
μ
Example 2
s) have elapsed after setting RTCE to 1
Sets to counter operation
start
Checks the counter wait status
Sets the counter operation
Sets to stop the SEC to YEAR
counters, reads the counter
value, write mode
Shifts to STOP mode
387