MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 29

• 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

2.6 Register Summary
Freescale Semiconductor
$0000
$0001
$0002
$0003
Addr.
Register Name
Note: $FFF6–$FFFD
Port A Data Register
Port B Data Register
Port C Data Register
Port D Data Register
8 security bytes
contains
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 7)
(PTC)
(PTD)
(PTA)
(PTB)
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
$FFDC
$FE0D
$FF7D
$FFDB
$FFFE
$FE0F
$FE10
$FE1F
$FE20
$FF55
$FF56
$FF7E
$FF7F
$FFFF
↓
↓
↓
↓
↓
↓
Figure 2-1. Memory Map (Continued)
Bit 7
0
0
0
0
= Unimplemented
PTD6
6
0
0
0
Reserved for Compatibility with Monitor Code
FLASH Block Protect Register (FLBPR)
PTD5
PTB5
Low byte of reset vector when read
5
0
0
COP Control Register (COPCTL)
(36 Bytes including $FFFF)
for A-Family Parts
R = Reserved
Unimplemented
Unimplemented
Unimplemented
FLASH Vectors
Monitor ROM
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
PTB4
PTD4
310 Bytes
Reserved
16 Bytes
40 Bytes
93 Bytes
3 Bytes
4
0
0
PTA3
PTB3
PTD3
3
0
PTA2
PTB2
PTD2
U = Unaffected
2
0
Register Summary
PTA1
PTB1
PTC1
PTD1
1
PTA0
PTB0
PTC0
PTD0
Bit 0
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