upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 282
![no-image](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__sml.jpg)
upd78f0730
Manufacturer Part Number
upd78f0730
Description
8-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0730.pdf
(518 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
upd78f0730MC(S)-CAB-AX/JM
Manufacturer:
NEC
Quantity:
538
Company:
Part Number:
upd78f0730MC(S)-CAB-AX/JM
Manufacturer:
RENESAS
Quantity:
1 000
Part Number:
upd78f0730MC(S)-CAB-AX/JM
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
upd78f0730MC-CAB-AX
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
- Current page: 282 of 518
- Download datasheet (4Mb)
12.4 Register Configuration
12.4.1 Control registers
282
(1) UF0 EP0NAK register (UF0E0N)
UF0E0N
Bit position
This register controls NAK of Endpoint0 (except an automatically executed request).
This register can be read or written in 8-bit units (however, bit 0 can only be read).
It takes five USB clocks to reflect the status on this register after the UF0FIC0 and UF0FIC1 registers have
been set. If it is necessary to read the status correctly, therefore, separate a write signal that accesses the
UF0FIC0 and UF0FIC1 registers from a read signal that accesses the UF0EPS0, UF0EPS1, UF0EPS2,
UF0E0N, and UF0EN registers by at least four USB clocks.
While NAK is being transmitted to Endpoint0 Read and Endpoint2, a write access to the EP0NKR bit is ignored.
1
0
7
0
EP0NKR
EP0NKW
Bit name
6
0
CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
This bit controls NAK to the OUT token to Endpoint0 (except an automatically executed
request). It is automatically set to 1 by hardware when Endpoint0 has correctly received
data. It is also cleared to 0 by hardware when the data of the UF0E0R register has been
read by FW (counter value = 0).
Set this bit to 1 by FW when data should not be received from the USB bus for some
reason even when USBF is ready for receiving data. In this case, USBF continues
transmitting NAK until this bit is cleared to 0 by FW. This bit is also cleared to 0 as soon
as the UF0E0R register has been cleared.
This bit indicates how NAK to the IN token to Endpoint0 is controlled (except an
automatically executed request). This bit is automatically cleared to 0 by hardware when
the data of Endpoint0 is transmitted and the host correctly receives the transmitted data.
The data of the UF0E0W register is retained until this bit is cleared. Therefore, it is not
necessary to rewrite this bit even in the case of a retransmission request that is made if
the host could not receive data correctly. To send a short packet, be sure to set the
E0DED bit of the UF0DEND register to 1. This bit is automatically set to 1 when the
FIFO is full. As soon as the E0DED bit of the UF0DEND register is set to 1, the
EP0NKW bit is automatically set to 1 at the same time.
If control transfer enters the status stage while ACK cannot be correctly received in the
data stage, this bit is cleared to 0 as soon as the UF0E0W register is cleared. This bit is
also cleared to 0 when UF0E0W is cleared by FW.
5
0
1: Transmit NAK.
0: Do not transmit NAK (default value).
1: Do not transmit NAK.
0: Transmit NAK (default value).
Preliminary User’s Manual U19014EJ1V0UD
4
0
3
0
2
0
EP0NKR EP0NKW
Function
1
0
Address
FF60H
After reset
00H
Related parts for upd78f0730
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HD6417709S](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![M30291FCTHP](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![R0K505210S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
![R0K505630S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
![R0K50563NS000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
![R0K507269S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
![Y-PG-FP5-EE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
![HA1127](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![HA17747](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3799CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3719D](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3778CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3777CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3798CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3728DZ](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: