參數(shù)資料
型號(hào): HC05
廠商: Motorola, Inc.
英文描述: Bipolar Transistor; Transistor Polarity:Dual P Channel; Power Dissipation:20W; DC Current Gain Min (hfe):25; Collector Current:1A; DC Current Gain Max (hfe):200; Power (Ptot):20W
中文描述: 高密度互補(bǔ)金屬氧化物半導(dǎo)體(HCMOS)微控制器
文件頁(yè)數(shù): 46/232頁(yè)
文件大小: 1095K
代理商: HC05
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MOTOROLA
3-4
MC68HC05X16
Rev. 1
MEMORY AND REGISTERS
3
3.5
EEPROM
The user EEPROM consists of 256 bytes of memory located from address $0100 to $01FF. 255
bytes are general purpose and 1 byte is used by the option register. The non-volatile EEPROM is
byte erasable.
An internal charge pump provides the EEPROM voltage (V
PP1
), which removes the need to supply
a high voltage for erase and programming functions. The charge pump is a capacitor/diode ladder
network which will give a very high impedance output of around 20-30 M
. The voltage of the
charge pump is visible at the VPP1 pin. During normal operation of the device, where
programming/erasing of the EEPROM array will occur, VPP1 should never be connected to either
VDD or VSS as this could prevent the charge pump reaching the necessary programming voltage.
Where it is considered dangerous to leave VPP1 unconnected for reasons of excessive noise in a
system, it may be tied to V
DD
; this will protect the EEPROM data but will also increase power
consumption, and therefore it is recommended that the protect bit function is used for regular
protection of EEPROM data (see
Section 3.5.5
).
In order to achieve a higher degree of security for stored data, there is no capability for bulk or row
erase operations.
The EEPROM control register ($0007) provides control of the EEPROM programming and erase
operations.
Warning:
The VPP1 pin should never be connected to VSS, as this could cause permanent
damage to the device.
3.5.1
EEPROM control register
WOIE — Wired-OR interrupt enable
This bit is used to enable wired-OR interrupts on the NWOI pin and on all port B pins which have
been programmed as inputs. Wired-OR interrupts can only be enabled if the WOI mask option is
selected (see
Section 1.2
). WOIE is forced to zero if this mask option is not selected. Power-on
reset clears the WOIE bit.
1 (set)
Wired-OR interrupts are enabled (provided that wired-OR interrupts
have been selected as a mask option).
0 (clear) –
Wired-OR interrupts are disabled.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
EEPROM/ECLK control
$0007
WOIE
CAF
0
0
ECLK E1ERA E1LAT E1PGM 0000 0000
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HC0500 制造商:Alltrade Tools LLC 功能描述:4OZ CROSS PEIN HAMMER
HC0502 制造商:Alltrade Tools LLC 功能描述:12OZ CROSS PEIN HAMMER
HC0503 制造商:Alltrade Tools LLC 功能描述:HAMMER-BALL PEIN 4OZ
HC0504 制造商:Alltrade Tools LLC 功能描述:HAMMER-BALL PEIN 8OZ
HC0505 制造商:Alltrade Tools LLC 功能描述:HAMMER-BALL PEIN 1LB