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參數(shù)資料
| 型號： | AT18F040-30XU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FLASH CONFIG 4MBIT 20-TSSOP |
| 產(chǎn)品變化通告： | AT18F Family Obsolescence 06/Feb/2012 |
| 標準包裝： | 74 |
| 可編程類型： | 閃存 |
| 存儲容量： | 4Mb |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 609 (CN2011-ZH PDF) |
7
3672A–CNFG–1/08
AT18F010/002/040/080 [Preliminary]
6.6
CEO
Chip Enable Output for configuration download. This output goes Low when the internal address
counter of the device has reached its maximum value which signals that all configuration data is
being clocked out of the device. In a daisy chain of AT18F Series devices, the CEO pin of one
device must be connected to the CE input of the next device in the chain. It will stay Low as long
as CE is Low and OE is High. It will then follow CE until OE goes Low; thereafter, CEO will stay
High until the entire memory device is read again.
6.7
TMS
JTAG Mode Control Input. The state of TMS with the rising edge of TCK determines the state
transitions of the Test Access Port (TAP) controller. TMS has an internal 50 K
weak pull-up to
V
CCJ to provide a logic 1 to the device.
6.8
TCK
JTAG Clock Input. This pin is the JTAG clock input to the TAP controller of the device.
6.9
TDI
JTAG Serial Data Input. This pin is the serial input to all JTAG instructions and data registers. An
internal 50 K
weak pull-up to V
CCJ provides a logic 1 to the device.
6.10
TDO
JTAG Serial Data Output. This pin is the serial output to all JTAG instruction and data registers.
An internal 50 K
weak pull-up to V
CCJ provides a logic 1 to the device if the pin is not driven.
6.11
VCCINT
+3.3V supply voltage for internal logic.
6.12
NC
No Connect Pin. This pin is not connected to any internal logic of the device and can be left
floating.
6.13
VCCO
Supply voltage for I/O drivers (1.8V, 3.3V, or 3.3V).
6.14
VCCJ
Supply voltage for JTAG I/O drivers (1.8V, 3.3V, or 3.3V).
6.15
GND
Power supply ground.
7.
Standby Mode
The AT18F Series Configurators enter a low-power standby mode whenever the JTAG mode is
inactive and CE is asserted High. In this mode, the AT18F Configurator consumes less than 1
mA of current at 3.3V. The output remains in a high-impedance state regardless of the state of
the OE input.
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