MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 82

• Manufacturer Part Number: MC812A4CPVE8
• Description: IC MCU 16BIT EEPROM 4K 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC812A4CPVE8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 83
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: EEPROM
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Processor Series: HC812A
• Core: HC12
• Data Bus Width: 16 bit
• Data Ram Size: 1 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 91
• Number Of Timers: 8
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 8 Channel
• Controller Family/series: 68HC12
• No. Of I/o's: 91
• Eeprom Memory Size: 4KB
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Memory Expansion and Chip-Select
82
Register
WINDEF
CSCTL0
CSCTL1
INITRM
INITRG
EPAGE
MXAR
MISC
$0C00
$0D00
$0FFF
$0A00
$0B00
$0E00
$0F00
$0000
$0100
$0200
$0300
$0400
$0500
$0600
$0700
$0800
$0900
Figure 8-1. Chip-Selects CS3–CS0 Partial Memory Map
%0xxxxxxx
INTERNAL SPACE
Value
$00
$08
$20
$00
$xF
$01
$x8
REGISTERS
1 KBYTE
RAM
Table 8-2. Example Register Settings
Assigns internal RAM to $0000–$0FFF
Assigns register block to $0800–$09FF and register-following
chip-selects at $0A00–$0BFF
Enable EPAGE
No port G lines assigned as extended address
Enables CS3, CS2, CS1, and CS0
Makes CS3 follow EPAGE
Puts EPAGE at $0400–$07FF
Keeps the translated value of the upper addresses the same as it
would have been before translation; not necessary if all external
devices use chip-selects
MC68HC812A4 Data Sheet, Rev. 7
EXTERNAL SPACE
CS3
CS0
CS1
CS2
Meaning
1 KBYTE
256 BYTES
128 BYTES
128 BYTES
Freescale Semiconductor