BC66F840 Datasheet, PDF (31/242 Pages) Holtek Semiconductor Inc – 2.4GHz Flash RF TX/RX MCU

BC66F840/BC66F850/BC66F860
2.4GHz Flash RF TX/RX MCU
During the programming process, the user must take care of the ICPDA and ICPCK pins for data
and clock programming purposes to ensure that no other outputs are connected to these two pins.
W r ite r
C o n n e c to r S ig n a ls
M CU
P r o g r a m m in g P in s
W r ite r _ V D D
VDD
IC P D A
PB4
IC P C K
PB2
W r ite r _ V S S
VSS
*
*
T o o th e r C ir c u it
Note: * may be resistor or capacitor. The resistance of * must be greater than 1kΩ or the capacitance
of * must be less than 1nF.
On-Chip Debug Support – OCDS
There is an EV chip named BC66V8x0 which is used to emulate the BC66F8x0 device respectively.
The BC66V8x0 device also provides the “On-Chip Debug” function to debug the corresponding
BC66F8x0 device during development process. The devices, BC66F8x0 and BC66V8x0, are
almost functional compatible except the “On-Chip Debug” function. Users can use the BC66V8x0
device to emulate the BC66F8x0 device behaviors by connecting the OCDSDA and OCDSCK
pins to the Holtek HT-IDE development tools. The OCDSDA pin is the OCDS Data/Address input/
output pin while the OCDSCK pin is the OCDS clock input pin. When users use the BC66V8x0
EV chip for debugging, the corresponding pin functions shared with the OCDSDA and OCDSCK
pins in the BC66F8x0 device will have no effect in the BC66V8x0 EV chip. However, the two
OCDS pins which are pin-shared with the ICP programming pins are still used as the Flash Memory
programming pins for ICP. For more detailed OCDS information, refer to the corresponding
document named “Holtek e-Link for 8-bit MCU OCDS User’s Guide”.
Holtek e-Link Pins
OCDSDA
OCDSCK
VDD
GND
EV Chip Pins
OCDSDA
OCDSCK
VDD
VSS
Pin Description
On-Chip Debug Support Data/Address input/output
On-Chip Debug Support Clock input
Power Supply
Ground
Rev. 1.40
31
May 24, 2017