參數(shù)資料
型號: MC68HC05K3CSDR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO20
封裝: SSOP-20
文件頁數(shù): 120/132頁
文件大小: 1188K
代理商: MC68HC05K3CSDR2
Technical Data
MC68HC05K3 — Revision 4.0
88
Personality EEPROM (PEEPROM)
MOTOROLA
Personality EEPROM (PEEPROM)
Figure 9-4. Serial Programming Connections
9.6.2 Multiple Devices in Serial Program Mode
met, multiple MC68HC05K3 devices can be connected in parallel during
serial programming. All the parallel devices can share the same power
supplies for the VDD and VSS; and they may all share the same DATA
and RESET signals. The only signal that must be routed individually to
each device is the SEL/CLK signal. Programming time can be reduced
by setting the data for each unit and then clocking its SEL/CLK low and
remaining low until the data has been received by all other devices. Then
raise the SEL/CLK line high for all units after the required programming
time.
NOTE:
Direct connection of the RESET pin to the VDD supply should be avoided
because as an internal reset source, such as a COP watchdog reset or
an illegal address, reset turns on an internal pulldown device connected
16-PIN
PDIP
PACKAGE
RESET
1
PB1/OSC3
2
PB0
3
IRQ
4
PA0
5
PA1
6
PA2
7
PA3
8
OSC1
16
OSC2
15
VSS
14
VDD
13
PA7
12
PA6
11
PA5
10
PA4
9
VDD
VSS
R
C
SEL/CLK
RESET
DATA
USED IN
APPLICATION
AS REQUIRED
INPUT SOURCES
USED IN
APPLICATION
USED IN
APPLICATION
AS REQUIRED
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