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HC705V8GRS/D Datasheet(PDF) 35 Page - NXP Semiconductors

Part # HC705V8GRS/D
Description  The Motorola MC68HC705V8 microcontroller is a custom HC05 based MCU featuring a Message Data Link Controller (MDLC) module and on-chip power regulation.
PDF  172 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

HC705V8GRS/D Datasheet(HTML) 35 Page - NXP Semiconductors

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SECTION 3: EPROM AND EEPROM
Page 24
MC68HC705V8 Specification Rev. 2.1
Figure 3-1:
Bootstrap EPROM Programmer Schematic
3.2.1
PROGRAMMING REGISTER $0D
This register is used to program the EPROM array. To program a byte of EPROM, set
LATCH, then write data to the desired address, then set EPGM for t
EPGM
.
Figure 3-2:
Programming Register
MORON - Mask Option Register On
This bit enables and disables the decoding of the MOR register.
0- The first byte of Boot ROM will be read from location $3C00.
PA0-7
A0-7
OSC1
OSC2
RESET
PC7
PC6
VBATT/VPP
PROG
VERF
27128
CE
OE
PC1
PC0
V
DD
V
DD
V
DD
V
DD
V
PP
20 pf
10 M
Ω
4 MHz
20 pf
20
22
All Resistors are 10 K
Ω unless specified otherwise
390
Ω
390
Ω
14
28
27
1
V
DD
MC68HC705V8
PB0-5
A8-13
D0-7
PD0-7
VSS,VSSA1,
PC2
V
DD
PB7
V
DD
IRQ
VDD,VCCA
+5V
VIGN
0.1
µF & 10µF
1
µF
PC4
LOAD
BUS
VSSA2,VREFL
PC3
REXT1
REXT2
31.6K
24.9K
V
CCA
VREFH
V
DD
25K
75K
*
* Always use an external 15 volt supply
while programming the EPROM with the
Bootloader.
V
PP
$0D
0
000000
0
RESET:
MORON
0
0
0
LATCH
EPGM
0
0
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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