DF2218BR24V Renesas Electronics America, DF2218BR24V Datasheet - Page 558

• Manufacturer Part Number: DF2218BR24V
• Description: IC H8S/2218 MCU FLASH 112-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2218BR24V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 24MHz
• Connectivity: SCI, SmartCard, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 112-LFBGA
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK2218-SS - KIT DEV H8S/2218 WINDOWS SIDESHW3DK2218 - DEV EVAL KIT H8S/2218
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.5.3
(1) Suspend and Resume Operations
Rev.7.00 Dec. 24, 2008 Page 502 of 698
REJ09B0074-0700
Figures 14.7 and 14.8 are flowcharts of the suspend and resume operations. If the USB bus
enters the suspend state from a non-suspend state, or if it enters a non-suspend state from the
suspend state due to a resume signal from up-stream, perform the operations shown below.
Notes: 1. The standby enable flag is a software flag for controlling transition to the
generated from up-stream
USB cable connected
A resume interrupt is
A bus idle of 3 ms or
Suspend and Resume Operations
USB function
A suspend/resume
A suspend/resume
interrupt occurs
interrupt occurs
Suspend state
more occurs
2. Interrupts should be masked from when the IRQ6 interrupt is received until the
Figure 14.7 Example Flowchart of Suspend and Resume Operations
standby state (one of the power-down modes). There is no such hardware flag.
SLEEP instruction is executed. Finally, unmask the interrupts using the LDC
instruction or the like and execute the SLEEP instruction immediately afterward.
Suspend/resume interrupt
processing
Firmware
Suspend interrupt
Resume interrupt
(see figure 14.8)
(see figure 14.8)
processing
processing
IRQ6
IRQ6
Main process
(Set SPRSiE in UIER3 to 1)
of the power-down modes
In one of the power-down
(Set IRQ6E in IER to 1)
(Set IRQ6E in IER to 1)
(Manipulate bit I using
(Clear standby enable
Enable IRQ6 interrupt
(Clear bit I using LDC
LDC instruction, etc.)
Unmask all interrupts
Enable SPRSi and
Run user program
Mask all interrupts
Initialize standby
Transition to one
(Execute SLEEP
Standby enable
Standby enable
instruction, etc.)
IRQ6 interrupts
enable flag
instruction)
flag = 0?
flag = 1?
flag to 0)
modes
Yes
Yes
*
*
1
1
*
*
*
*
No
1
No
2
2
2