參數(shù)資料
型號： MC68HC705SB7
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝： SOIC-28
文件頁數(shù)： 41/170頁
文件大?。?/td> 2161K
代理商： MC68HC705SB7
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
PERSONALITY EPROM
MOTOROLA
REV 2.1
16-5
16.5
PEPROM PREPROGRAMMED OPTIONS
The MC68HC05SB7 is available with a factory preprogrammed PEPROM. The fol-
lowing measured parameters are available:
The internal VCO minimum frequency: [programmed or left blank]
The internal VCO maximum frequency: [programmed or left blank]
The internal bandgap reference voltage: [programmed or left blank]
The internal temperature sensor voltage: [programmed or left blank]
Each parameter is stored as a 16-bit value in the PEPROM, as shown in the
Table 16-1. Unprogrammed
bits
are
blank,
and
are
available
for
user
programming.
16.5.1 Data Format in Preprogrammed PEPROM
The 16-bit value is a binary representation of the measured data (4 digits, with the
decimal point removed). Some examples are shown below.
For a measured data for fVCOMIN=1.500MHz, it is converted to 1500 or 5DC (hex)
and the hex data is programmed as 0000 0101 1101 1100.
For a measured data for fVCOMAX=5.800MHz, it is converted to 5800 or 16A8
(hex) and the hex data is programmed as 0001 0110 1010 1000.
For a measured data for VIB=1.211V, it is converted to 1211 or 4BB (hex) and the
hex data is programmed as 0000 0100 1011 1011.
For a measured data for VTEMP=836.0mV, it is converted to 8360 or 20A8 (hex)
and the hex data is programmed as 0010 0000 1010 1000.
Table 16-2. PEPROM Preprogrammed Option
PEBSR
(LSB - MSB)
DATA
$00 - $0F
VCO Minimum Frequency (fVCOMIN)
$10 - $1F
VCO Maximum Frequency (fVCOMAX)
$20 - $2F
Internal Bandgap Voltage (VIB)
$30 - $3F
Temperature Sensor Voltage1
Note: 1. measured at 80
°C
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