Electronic Components Datasheet Search |
|
SC9318FB-033 Datasheet(PDF) 8 Page - Silan Microelectronics Joint-stock |
|
SC9318FB-033 Datasheet(HTML) 8 Page - Silan Microelectronics Joint-stock |
8 / 28 page SC9318-033 HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.2 2003.05.20 Http: www.silan.com.cn Page 8 of 29 (Continued) Pin No. Symbol Description 56 VDD 53 GND Power-supply pins; Pins to which power is applied. Normally, VDD=1.8~3.6V (3.0V Typ.) is applied. In back-up mode (when CKSTP instructions are being executed), voltage can be lowered to 1.0V. If voltage falls below 1.5V while the CPU is operating, the CPU stops to prevent malfunction (STOP mode). When the voltage rises above 1.5V, the CPU restarts. STOP mode can be detected by checking the STOP F/F bit. If necessary, execute initialization or adjust clock by program. When detecting or preventing CPU malfunctions using an external circuit, STOP mode can be invalidated and rendered non-operative by program. In that case, all four bits of the internal TEST port should be set to “1”. If more than 1.8V is applied when the pin voltage is 0, the device’ s system is reset and the program starts from address “0”. (power on reset).(Note) To operate the power on reset, the power supply should start up in 10~100ms. 54 FMIN FM programmable counter input; Programmable counter input pin for FM,VHF band. The 1/2+pulse swallow system (VHF mode) and the pulse swallow system (FM mode) are selectable freely by program. At the VHF mode, local oscillation output (VCO output) of 50~230MHz (0.2VP-P(Min)) is input and FM mode, 40~130MHz (0.2VP-P (Min)) is input. A built-in input amp and C coupling allow operation at low- level input. (Note) when in the PLL OFF mode or when set to AMIN input, the input is pulled down. 55 AMIN AM local oscillator signal input; Programmable counter input pin for AM band. The pulse swallow system (HF mode) and direct dividing system (LF mode) are freely selectable by program. At the HF mode, local oscillation output (VCO output) of 1~45MHz (0.2VP-P(Min)) is input and LF mode, 0.5~12MHz (0.2VP-P(Min)) is input. Built-in input amp operates with low-level input using a C coupling. (Note) When in PLL OFF mode or when set to FMIN input, the input is pulled down. 57 RESET Reset input; Input pin for system reset signals. RESET takes place while at low level; at high level, the program starts from address”0”. Normally, if more than 1.8V is supplied to VDD when the voltage is 0, the system is reset (Power on reset). Accordingly, this pin should be set to high level during operation. 58 XOUT 59 XIN Crystal oscillator pins. A reference 75kHz crystal oscillator is connected to the XIN and XOUT pins. The oscillator stops oscillating during CKSTP instruction execution. The VXT pin is the power supply for the crystal oscillator. A stabilizing capacitor (0.47 µF Typ.) is connected. (To be continued) |
Similar Part No. - SC9318FB-033 |
|
Similar Description - SC9318FB-033 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |