M306N4FGTFP Renesas Electronics America, M306N4FGTFP Datasheet - Page 58

• Manufacturer Part Number: M306N4FGTFP
• Description: IC M16C MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/6Nr

Specifications of M306N4FGTFP

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 26x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

M16C/6N Group (M16C/6N4)
Rev.2.40
REJ09B0009-0240
6. Processor Mode
6.1 Types of Processor Mode
Table 6.1 Features of Processor Modes
NOTE:
6.2 Setting Processor Modes
Table 6.2 Processor Mode after Hardware Reset
NOTES:
Table 6.3 Bits PM01 to PM00 Set Values and Processor Modes
Single-chip mode
Memory expansion mode
Microprocessor mode
VSS
VCC
00b
01b
10b
11b
Three processor modes are available to choose from: single-chip mode, memory expansion mode, and
microprocessor mode. Table 6.1 shows the Features of Processor Modes.
Processor mode is set by using the CNVSS pin and bits PM01 to PM00 in the PM0 register.
Table 6.2 shows the Processor Mode after Hardware Reset. Table 6.3 shows Bits PM01 to PM00 Set
Values and Processor Modes.
Rewriting bits PM01 to PM00 places the MCU in the corresponding processor mode regardless of whether
the input level on the CNVSS pin is “H” or “L”. Note, however, that bits PM01 to PM00 cannot be rewritten
to 01b (memory expansion mode) or 11b (microprocessor mode) at the same time bits PM07 to PM02 are
rewritten. Note also that these bits cannot be rewritten to enter microprocessor mode in the internal ROM,
nor can they be rewritten to exit microprocessor mode in areas overlapping the internal ROM.
If the MCU is reset in hardware by applying VCC to the CNVSS pin (hardware reset), the internal ROM
cannot be accessed regardless of bits PM01 to PM00.
Figures 6.1 and 6.2 show the PM0 Register and PM1 Register. Figure 6.3 shows the Memory Map in
Single-chip Mode. Figures 6.4 to 6.7 show the Memory Map and CS Area in Memory Expansion Mode and
Microprocessor Mode.
CNVSS Pin Input Level
1. Refer to 7. Bus.
1. If the MCU is reset in hardware by applying VCC to the CNVSS pin, the internal ROM cannot be
2.
Bits PM01 to PM00
accessed regardless of bits PM01 to PM00.
The multiplexed bus cannot be assigned to the entire CS space.
Processor Mode
(1) (2)
Apr 14, 2006
page 34 of 376
SFR, internal RAM, internal ROM
SFR, internal RAM, internal ROM,
external area
SFR, internal RAM, external area
Single-chip mode
Microprocessor mode
Single-chip mode
Memory expansion mode
Do not set a value
Microprocessor mode
Access Space
(1)
Processor Mode
Processor Mode
_____
(1)
_____
All pins are I/O ports or
peripheral function I/O pins
Some pins serve as bus control pins
Some pins serve as bus control pins
Pins Which are Assigned I/O Ports
6. Processor Mode
(1)
(1)