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您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄25635 > SC80C52XXX-12SV (TEMIC SEMICONDUCTORS) 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40 PDF資料下載

型號(hào)：	SC80C52XXX-12SV
廠商：	TEMIC SEMICONDUCTORS
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40
封裝：	SIDE BRAZED, 40 PIN
文件頁(yè)數(shù)：	277/1021頁(yè)
文件大?。?/td>	15196K
代理商：	SC80C52XXX-12SV

32072H–AVR32–10/2012

AT32UC3A3

blocks is a function of CTLx.LLP_S_EN, CFGx.RELOAD_SR, CTLx.LLP_D_EN, and

Both SARx and DARx updates cannot be selected to be contiguous. If this functionality is

required, the size of the Block Transfer (CTLx.BLOCK_TS) must be increased. If this is at the max-

imum value, use Row 10 of

Table 19-1 on page 327 and setup the LLI.SARx address of the

block descriptor to be equal to the end SARx address of the previous block. Similarly, setup the

LLI.DARx address of the block descriptor to be equal to the end DARx address of the previous

Suspension of Transfers Between Blocks

At the end of every block transfer, an end of block interrupt is asserted if:

interrupts are enabled, CTLx.INT_EN = 1

the channel block interrupt is unmasked, MaskBlock[n] = 0, where n is the channel number.

The block complete interrupt is generated at the completion of the block transfer to the destination.

For rows 6, 8, and 10 of Table 19-1 on page 327, the DMA transfer does not stall between block

transfers. For example, at the end of block N, the DMACA automatically proceeds to block N + 1.

For rows 2, 3, 4, 7, and 9 of Table 19-1 on page 327 (SARx and/or DARx auto-reloaded between

block transfers), the DMA transfer automatically stalls after the end of block. Interrupt is asserted

if the end of block interrupt is enabled and unmasked.

The DMACA does not proceed to the next block transfer until a write to the block interrupt clear

For rows 2, 3, 4, 7, and 9 of Table 19-1 on page 327 (SARx and/or DARx auto-reloaded between

block transfers), the DMA transfer does not stall if either:

interrupts are disabled, CTLx.INT_EN = 0, or

the channel block interrupt is masked, MaskBlock[n] = 1, where n is the channel number.

Channel suspension between blocks is used to ensure that the end of block ISR (interrupt ser-

vice routine) of the next-to-last block is serviced before the start of the final block commences.

This ensures that the ISR has cleared the CFGx.RELOAD_SR and/or CFGx.RELOAD_DS bits

b e fo re co mp let i on of t h e fina l blo ck. Th e r e lo ad bit s CF Gx .REL OAD _ SR a n d / o r

CFGx.RELOAD_DS should be cleared in the ‘end of block ISR’ for the next-to-last block

Ending Multi-block Transfers

All multi-block transfers must end as shown in either Row 1 or Row 5 of Table 19-1 on page 327.

At the end of every block transfer, the DMACA samples the row number, and if the DMACA is in

Row 1 or Row 5 state, then the previous block transferred was the last block and the DMA trans-

fer is terminated.

Row 1 and Row 5 are used for single block transfers or terminating multiblock transfers. Ending in

Row 5 state enables status fetch for the last block. Ending in Row 1 state disables status fetch for

the last block.

For rows 2,3 and 4 of Table 19-1 on page 327, (LLPx = 0 and CFGx.RELOAD_SR and/or

CFGx.RELO A D_DS is s e t), m u lti-bloc k DM A tran sfer s co ntinu e un til b o th th e

CFGx.RELOAD_SR and CFGx.RELOAD_DS registers are cleared by software. They should be

相關(guān)PDF資料	PDF描述
S80C32XXX-40R	8-BIT, 40 MHz, MICROCONTROLLER, PQCC44
S83C154DCXXX-16R	8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC44
SD80C32EXXX-30SC	8-BIT, 30 MHz, MICROCONTROLLER, CDIP40
S80C52XXX-12SHXXX:R	8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC44
S80C154-20	8-BIT, 20 MHz, MICROCONTROLLER, PQCC44

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
SC80-M30/5	制造商:GardTec Inc 功能描述:SC Series 80 mm Steel Bright Nickel Chrome 4 Place Screw Mount Fan Guard
SC80-P10	制造商:GardTec Inc 功能描述:SC Series 80 mm Steel Bright Nickel Chrome 4 Place Screw Mount Fan Guard
SC80-P15/30	制造商:GardTec Inc 功能描述:SC Series Gardtec Fan guard
SC80-P15/45	制造商:GardTec Inc 功能描述:SC Series 80 mm Plastic Polyurethane Foam 4 Place Screw Mount Fan Guard
SC80-P40	制造商:GardTec Inc 功能描述:Plastic Fan Guard

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