M30800SFP-BL#U5 Renesas Electronics America, M30800SFP-BL#U5 Datasheet - Page 236

• Manufacturer Part Number: M30800SFP-BL#U5
• Description: MCU 3/5V 0K,PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/80r

Specifications of M30800SFP-BL#U5

• Core Processor: M16C/80
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

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R
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1
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6
Figure 27.3 Setting procedure of the port register and direction register.
1 .
0
C
Microprocesser mode or Memory expansion mode
Microprocessor
9
0 .
8 /
B
When the MCU enters wait mode while operating in memory expansion mode or microprocessor
mode, a pin functioning as part of the address or data bus retains it's state on the bus before wait mode
is entered. Shift to single-chip mode and output an arbitrary value in order to reduce current consumption.
By shifting to single-chip mode, a pin which was functioning as part of the bus becomes a general-
purpose port and can output an arbitrary value. Set the port registers and direction registers after shifting
to single-chip mode (this implies that any control pins (CS,WR,RD,etc.. ) being used for access of an
external device be changed as well).
If the port registers and direction registers are set while in memory expansion mode or microprocessor
mode, the operation will be ignored.
This is similar when entering stop mode.
Setting procedure is following.
If the software reset is executed when the CNVss pin is connected to Vcc to start up in microprocessor
mode, write at least three NOP instructions following the writing instruction to the PM0 Register.
example:
0
0
0
1
A
G
8
mov.b #02H,PRCR
bset 3,PM0
nop
nop
nop
nop
u
7
o r
. g
0 -
u
1
0
p
0
, 2
0
Note . This program does not work in external area. Transfer a program to
Operate in memory expansion mode or microprocessor mode
2
0
0
5
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internal RAM and work on internal RAM.
; write at least three NOP instructions
; or "mov.b #8BH,PM0" (instruction to execute software reset)
Enter the wait mode or stop mode
f o
3
Shift to single-chip mode
Set the direction register
2
9
Set the port register
_____ _____ _____
27. Usage Precaution
Note