ST7263BE6 STMicroelectronics, ST7263BE6 Datasheet - Page 99

• Manufacturer Part Number: ST7263BE6
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
• Manufacturer: STMicroelectronics

Specifications of ST7263BE6

• 4, 8, 16 Or 32 Kbytes Program Memory: high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection

ST7263Bxx
Interrupt/DMA register (IDR)
Reset value: xxxx 0000 (x0h)
Figure 45. DMA buffers
DA7
7
[7:6] DA[7:6] DMA address bits 7-6.
[5:4] EP[1:0] Endpoint number (read-only). These bits identify the endpoint which
[3:0] CNT[3:0] Byte count (read only).
DA15-6,000000
DA6
Software must reset these bits. See the description of the DMAR register and
Figure
required attention.
00: Endpoint 0
01: Endpoint 1
10: Endpoint 2
When a CTR interrupt occurs (see register ISTR) the software should read the EP
bits to identify the endpoint which has sent or received a packet.
This field shows how many data bytes have been received during the last data
reception.
Note: Not valid for data transmission.
45.
EP1
Doc ID 7516 Rev 8
EP0
101111
101000
100111
100000
011111
011000
010111
010000
001111
001000
000111
000000
Read.write
CNT3
Endpoint 2 RX
Endpoint 1 RX
Endpoint 0 RX
Endpoint 2 TX
Endpoint 1 TX
Endpoint 0 TX
CNT2
On-chip peripherals
CNT1
CNT0
0
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