mc68hc705j2 Freescale Semiconductor, Inc, mc68hc705j2 Datasheet - Page 65

• Manufacturer Part Number: mc68hc705j2
• Description: 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

8.2 Host Downloading
MC68HC705J2
Complete the following steps to bootload the MCU:
The MC68HC05P8EVS board supports downloading user programs directly
from a personal computer. Refer to MC68HC05P8EVS Customer Specified
Integrated Circuit (CSIC) Evaluation System, Motorola document number
BR735/D.
10. Remove the V
11. Remove the V
1. Turn off all power to the circuit.
2. Install the MCU and the EPROM.
3. Select the MCU mode:
4. Select the bootloader function:
5. Close switch S1 to reset the MCU.
6. Apply V
7. Apply the EPROM programming voltage, V
8. Open switch S1 to take the MCU out of reset. During programming the
9. Close switch S1 to reset the MCU.
a. Install a jumper between points 2 and 3 to program the MCU as an
b. Install a jumper between points 1 and 2 to program the MCU as an
a. Open switch S2 to select the program and verify function.
b. Close switch S2 to select the verify only function.
PROGRAM LED turns on. It turns off when the verification routine begins.
If verification is successful, the VERIFY LED turns on. If the bootloader
finds an error during verification, it puts the error address on the external
address bus and stops running.
MC68HC705J2.
MC68HC05J1.
DD
to the circuit.
DD
PP
voltage.
voltage.
BOOTLOADER MODE
PP
, to the circuit.
MOTOROLA
8-3