DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 652

• Manufacturer Part Number: DF2117VT20V
• Description: MCU 16BIT FLASH 3V 160K 144-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2117VT20V

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: FIFO, I²C, LPC, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 112
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-TQFP, 144-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

• Canceling software standby mode and watch mode
Rev. 2.00 Sep. 28, 2009 Page 610 of 994
REJ09B0452-0200
Software standby mode and watch mode are cancelled by a first KCLK falling interrupt. In this
case, an interrupt is generated at the first KCLK since software standby mode or watch mode
has been shifted (figure 19.17).
Notes on canceling operation are explained below.
⎯ When a transition to software standby mode or watch mode is performed while both
⎯ When software standby mode and watch mode are cancelled by a first KCLK falling
⎯ When software standby mode or watch mode is cancelled by receiving a receive clock, the
⎯ When transition to software standby mode or watch mode is made and the mode is
⎯ Priority of canceling software standby mode and watch mode is decided by the setting of
⎯ The interrupt signal path and flag setting of the first KCLK interrupt in normal operation
⎯ KCLK is input directly to the interrupt control block, not through the PS2, in software
KBIOE and KCIE are set to 1, canceling the current mode is enabled by a first KCLK
falling interrupt (the KBE and KBTS are not affected).
interrupt, the KCIF flag is not set (only the internal flag is set).
In the first KCLK interrupt handling routine, the KCIF bit is checked. If the KCIF is 0, it
indicates that the interrupt is generated after software standby mode and watch mode have
been cancelled.
reception is ignored. Execute reception terminating processing by an interrupt handing
routine, and then request retransfer.
canceled by a first KCLK falling interrupt during data transmission, state before
performing mode transition is held immediately after canceling the mode. Therefore,
initialization by an interrupt handling routine is required. Precautions as (b) and (c) which
are shown in figure 19.17 should be applied on interrupt generation.
ICR.
differ from those in software standby mode and watch mode. Figure 19.6 shows the
interrupt signal paths of the first KCLK interrupt.
Signal A: Interrupt signal in normal operation
Signal B: Interrupt signal in software standby mode and watch mode
standby mode and watch mode, and then an interrupt is generated by detection of a falling
edge. Therefore, the KCIF flag is not set. In this case, a flag that is in the interrupt control
block is set. The internal flag is automatically cleared after an interrupt request is sent to
the CPU. Figure 19.18 shows setting and clearing timing.