MC68HC05B6_13 Datasheet, PDF (203/302 Pages) Freescale Semiconductor, Inc – Microcontrollers

RESET
RUN 1N914
100kΩ
1kΩ
1N914
1.0µF
+
TCAP1 VRH VDD
IRQ
OSC1
RESET OSC2
0.01µF
Boot
red LED — programming failed
green LED — programming OK
Erase check
green LED — EPROM erased
red LED — EPROM not erased
+5V
red LED
470Ω
470Ω
green LED
NC
TCMP1
VPP1
PLMA
PLMB
RDI
VRL
TCAP2
PD7
PD6
PD5
PD3
PD2
PD1
PD0
MC68HC705B16
MCU
PD4
1 27 28
VPP PGM VCC
A13 ²⁶
20
CE
27C128
10
A0
A1
A2
A3
A4
A5
A6
A7
9
8
7
6
5
4
3
SCLK
TDO
TCMP2
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
VPP6
PC7
25
24
21
23
2
A8
A9
A10
A11
A12
GND
14
D0
D1
D2
D3
D4
D5
D6
D7
11
12
13
15
16
17
18
19
OE
22
PA0
PA1
PC5
PA2
PC6
PA3
PA4
PC4
PA5
PC3
PA6
PC2
PA7
PC1
VSS ^PC0
100µF +
P1 1
2
3
GND
+5V
V_PP
47µF ₊
22pF
4.0 MHz
22pF
Erase check & boot
EPROM erase
check
RAM
EPROM
1 kΩ
10k Ω
4k7Ω
4k7Ω
12 kΩ
BC239C
1nF ⁺
+5V
100 kΩ
HDSK out
Short circuit if
handshake not used
A12 ^{HDSK in}
A11
A10
A9
A8
Note:
This circuit is recommended for programming only at 25°C and not for use in the
end application, or at temperatures other than 25°C. If used in the end application,
VPP6 should be tied to VDD to avoid damaging the device.
Figure E-7 EPROM Parallel bootstrap schematic diagram
14
MC68HC05B6
Rev. 4.1
MC68HC705B16
Freescale
E-15