DF61654N50FTV Renesas Electronics America, DF61654N50FTV Datasheet - Page 742
![IC H8SX/1654 MCU FLASH 120TQFP](/photos/12/21/122199/df61654n50ftv_sml.jpg)
DF61654N50FTV
Manufacturer Part Number
DF61654N50FTV
Description
IC H8SX/1654 MCU FLASH 120TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Datasheet
1.DF61653N50FTV.pdf
(1020 pages)
Specifications of DF61654N50FTV
Core Processor
H8SX
Core Size
32-Bit
Speed
50MHz
Connectivity
I²C, IrDA, SCI, SmartCard, USB
Peripherals
DMA, PWM, WDT
Number Of I /o
75
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
120-TQFP, 120-VQFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK1657 - DEV EVAL KIT FOR H8SX/1657
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF61654N50FTV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 742 of 1020
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Section 15 USB Function Module (USB)
15.7
15.7.1
This section describes stall operations in this module. There are two cases in which the USB
function module stall function is used:
• When the application forcibly stalls an endpoint for some reason
• When a stall is performed automatically within the USB function module due to a USB
The USB function module has internal status bits that hold the status (stall or non-stall) of each
endpoint. When a transaction is sent from the host, the module references these internal status bits
and determines whether to return a stall to the host. These bits cannot be cleared by the
application; they must be cleared with a Clear Feature command from the host.
However, the internal status bit for EP0 is automatically cleared only when the setup command is
received.
15.7.2
The application uses the EPSTL register to issue a stall request for the USB function module.
When the application wishes to stall a specific endpoint, it sets the corresponding bit in EPSTL (1-
1 in figure 15.18). The internal status bits are not changed at this time. When a transaction is sent
from the host for the endpoint for which the EPSTL bit was set, the USB function module
references the internal status bit, and if this is not set, references the corresponding bit in EPSTL
(1-2 in figure 15.18). If the corresponding bit in EPSTL is set, the USB function module sets the
internal status bit and returns a stall handshake to the host (1-3 in figure 15.18). If the
corresponding bit in EPSTL is not set, the internal status bit is not changed and the transaction is
accepted.
Once an internal status bit is set, it remains set until cleared by a Clear Feature command from the
host, without regard to the EPSTL register. Even after a bit is cleared by the Clear Feature
command (3-1 in figure 15.18), the USB function module continues to return a stall handshake
while the bit in EPSTL is set, since the internal status bit is set each time a transaction is executed
for the corresponding endpoint (1-2 in figure 15.18). To clear a stall, therefore, it is necessary for
the corresponding bit in EPSTL to be cleared by the application, and also for the internal status bit
to be cleared with a Clear Feature command (2-1, 2-2, and 2-3 in figure 15.18).
Rev.1.00 Sep. 08, 2005 Page 692 of 966
REJ09B0219-0100
specification violation
Stall Operations
Overview
Forcible Stall by Application
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