ZHCSDD6I November 2014 – November 2024 ISO7841
PRODUCTION DATA
請參考 PDF 數據表獲取器件具體的封裝圖。
Table 7-2 lists the ISO7841 functional modes.
| VCCI | VCCO | INPUT (INx)(2) |
OUTPUT ENABLE (ENx) |
OUTPUT (OUTx) |
COMMENTS |
|---|---|---|---|---|---|
| PU | PU | H | H or open | H | Normal Operation: A channel output assumes the logic state of the input. |
| L | H or open | L | |||
| Open | H or open | Default | Default mode: When INx is open, the corresponding channel output goes to the default logic state. Default= High for ISO7841 and Low for ISO7841F. | ||
| X | PU | X | L | Z | A low value of Output Enable causes the outputs to be high-impedance |
| PD | PU | X | H or open | Default | Default mode: When VCCI is unpowered, a channel output
assumes the logic state based on the selected default option.
Default= High for IISO7841 and Low for ISO7841F. When VCCI transitions from unpowered to powered-up, a channel output assumes the logic state of the input. When VCCI transitions from powered-up to unpowered, channel output assumes the selected default state. |
| X | PD | X | X | Undetermined | When VCCO is unpowered, a channel output is undetermined
(1).
When VCCO transitions from unpowered to powered-up, a channel output assumes the logic state of the input |