DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 395
DF2170VTE33
Manufacturer Part Number
DF2170VTE33
Description
MCU 3V 256K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.DF2170BVTE33V.pdf
(572 pages)
Specifications of DF2170VTE33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
SCI, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
76
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
HD64F2170VTE33
HD64F2170VTE33
HD64F2170VTE33
Available stocks
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Part Number
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Quantity
Price
Company:
Part Number:
DF2170VTE33V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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4. Clearing Suspend Signal Output Mask
5. USB Suspend Interrupt (USBI2)
6. Suspend Signal Output Mask
12.7.2
In the firmware mainly for the USB, if the USB enters suspend mode, this LSI enters software
standby mode which is the power-down state because power consumption of the system can be
reduced. Since the system clock (φ) is stopped in software standby mode, the suspend recover
interrupt (SUSRI) is used to recover from software standby mode.
Figure 12.17 shows the enter/recover sequence of suspend mode and software standby mode. And
the following 1 to 8 descriptions explain the operation at its each point.
To prevent access to the USB module by the CPU or DMAC from occurring in the interrupt
processing routine, the USUSOUT bit in USBSUSP is set to 1 after the setting such as to stop
the DMAC is made. Then output of the USSUSP pin goes low and the USCLK input from the
external transceiver is stopped.
After the USCLK input is stopped, do not access the USB module registers by the CPU or
DMAC.
Even if the USCLK is stopped, the internal suspend signal is negated after the USB bus state is
recovered from the suspend state.
Since the USBI2 interrupt is requested when the internal suspend signal is changed, if
interrupts are enabled, an interrupt is requested to the CPU even when the internal suspend
signal is negated.
In the interrupt processing routine, output of the USSUSP pin should be masked (fixed to 1) by
clearing the USUSOUT bit in USBSUSP to 0.
Then access to the USB module registers can be performed by the CPU or DMAC.
Software Standby in Suspend Mode
Rev. 2.00, 03/04, page 361 of 534
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