參數(shù)資料
型號(hào): 73S1217F-68IM/F/P
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 47/93頁(yè)
文件大?。?/td> 0K
描述: IC SMART CARD READER PROG 68-QFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 260
系列: 73S12xx
核心處理器: 80515
芯體尺寸: 8-位
速度: 24MHz
連通性: I²C,智能卡,UART/USART,USB
外圍設(shè)備: LED,POR,WDT
輸入/輸出數(shù): 8
程序存儲(chǔ)器容量: 64KB(64K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 6.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 68-VFQFN 裸露焊盤
包裝: 管件
UG_12xxF_016
73S12xxF Software User Guide
Rev. 1.50
51
Return Codes
None.
4.2.8
Clock Generator Circuit API – Available with all 73S12xxF Devices
The Clock Generator API configures the system clock speed.
CPU_Select()
Purpose
Select the CPU speed. This API should be called after API_Init() is called if a
change in CPU speed is desired. The default speed is 3.69 MHz. Care should be
taken when selecting speeds other than 3.69 MHz, as the speed will affect the
number of supported Serial baud rates and timers API. The timer and Serial baud
rates will be adjusted internally by the LAPI. A wait state will be inserted to allow
USB I/O access time, i.e. CKCON will be set to the appropriate value to adjust wait
states.
Synopsis
void CPU_Select ( enum CPU_SPEED speed )
Parameters
speed: Input parameter
Specifies which CPU speed to run. Possible values are
CPU_3Mhz69 0,
CPU_6Mhz
1,
CPU_12Mhz
2,
CPU_24Mhz
3
Return Codes
None.
Some CPU speeds will limit the number of Serial baud rates supported. Table 4 lists the baud rates
supported by specific CPU clock rates.
Table 4: Clock Speeds and Baud Rates Supported
Baud Rate (bps)
CPU Clock Rate
3.69
MHz
6 MHz
12
MHz
24 MHz
600
X
1200
X
2400
X
4800
X
9600
X
14400
X
19200
X
28800
X
38400
X
57600
X
115200
X
115385
X
187500
X
375000
X
750000
X
//Can only support these rates when the CPU is running at 3.69 MHz
//CPU_3Mhz69
{BPS_600_3MHz69, BPS_1200_3MHz69, BPS_2400_3MHz69, BPS_4800_3MHz69,
BPS_9600_3MHz69, BPS_14400_3MHz69, BPS_19200_3MHz69, BPS_28800_3MHz69,
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