MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 132

• Manufacturer Part Number: MC68HC908GR8CD
• Description: 8-bit Microcontrollers - MCU 8 Bit 8MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908GR8CD

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: HC08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 384 B
• Operating Supply Voltage: 3 V to 5 V
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Data Rom Size: 64 KB
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 21
• Program Memory Type: Flash

Monitor ROM (MON)
132
DB-25
10 μF
10 μF
Notes:
2
3
7
1. SW2, SW3, and SW4: Position C — Enter monitor mode using external oscillator.
2. See
+
+
SW2, SW3, and SW4: Position D — Enter monitor mode using external XTAL and internal PLL.
Table 15-1. Monitor Mode Signal Requirements and Options
1
3
4
2
5
6
MC145407
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
20
18
17
19
16
15
Figure 15-1. Monitor Mode Circuit
+
+
32.768 kHz XTAL
10 μF
10 μF
6–30 pF
V
1
2
6
4
7
DD
MC74HC125
(SEE NOTE 3)
6–30 pF
330 kΩ
10 kΩ
14
3
5
V
D
C
C
C
D
TST
V
DD
D
SW2
(SEE NOTE 2)
SW4
(SEE NOTE 2)
SW3
for IRQ voltage level requirements.
0.033 μF
(SEE NOTES 2
10 k
0.1 μF
0.1 μF
AND 3)
10 kΩ
10 kΩ
10 kΩ
10 kΩ
V
V
V
DDA
DD
DD
V
DD
V
CGMXFC
PTA1
V
RST
IRQ
OSC1
OSC2
V
V
V
V
PTA0
PTB0
PTB1
DDA
SS
DD
DDAD
SSAD
SSA
68HC08
/V
/V
REFL
REFH
Freescale Semiconductor