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參數資料
型號: TPU3040PK
元件分類: 圖文
英文描述: TELETEXT DECODER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數: 49/72頁
文件大小: 347K
代理商: TPU3040PK
TPU 3035, TPU 3040, TPU 3050
PRELIMINARY DATA SHEET
53
Micronas
4.16. I/O Page Register
Note:
For compatibility reasons, every undefined bit of a write register should be set to ‘0’. Undefined bits of a read
register should be treated as “don’t care”.
0200 H
R/W
CONTROL REGISTER
Bit
Reset
Function
all
00 H
During reset the control register is loaded with the contents of the address FFF9H, but it can be read and
written via software.
7
0
1 = CPU disable
0 = CPU enable
6
0
1 = program RAM disable
0 = program RAM enable
5
0
1 = program ROM disable
0 = program ROM enable
4
0
1 = character ROM disable
0 = character ROM enable
3
0
1 = DMA interface disable
0 = DMA interface enable
2
0
1 = I/O page disable
0 = I/O page enable
1
0
1 = test mode on
0 = test mode off
0
write:
1 = burnin test mode (only if test pin high)
read:
1 = burnin test mode
0 = normal test mode
0202 H
Write
STANDBY
Bit
Reset
Function
2
0
1 = digital circuitry power off
(CPU still active with slow clock)
0 = digital circuitry power on
1
0
1 = analog circuitry power off
0 = analog circuitry power on
0
1 = character ROM power off
0 = character ROM power on
0203 H
Write
WATCHDOG
Bit
Reset
Function
all
6C H
reset watchdog if 8-bit value= 0x6c is written into this register
all other values or time out will reset the chip
相關PDF資料
PDF描述
TPU3040PO TELETEXT DECODER, PDIP52
TPU3040PQ TELETEXT DECODER, PQCC44
TPU3040PK TELETEXT DECODER, PDIP40
TPU3040PO TELETEXT DECODER, PDIP52
TPU3040PQ TELETEXT DECODER, PQCC44
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