M30803FGFP#U3 Renesas Electronics America, M30803FGFP#U3 Datasheet - Page 63
![MCU 3/5V 256K I-TEMP PB-FREE 100](/photos/12/21/122166/qfp100-g1_pkg_sml.jpg)
M30803FGFP#U3
Manufacturer Part Number
M30803FGFP#U3
Description
MCU 3/5V 256K I-TEMP PB-FREE 100
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/80r
Datasheet
1.M30803FGGPU3.pdf
(360 pages)
Specifications of M30803FGFP#U3
Core Processor
M16C/80
Core Size
16-Bit
Speed
20MHz
Connectivity
SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
85
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
20K 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
-40°C ~ 85°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R
R
8.5 Wait Mode
e
E
1
v
J
Table 8.5 Port status during wait mode
Note :When self-refresh is done in operating DRAM control, CAS and RAS becomes “L”.
6
1 .
0
________
________
__________
When a WAIT instruction is executed, the BCLK stops and the microcomputer enters the wait mode. In this
mode, oscillation continues but the BCLK and watchdog timer stop. Writing “1” to the WAIT peripheral
function clock stop bit and executing a WAIT instruction stops the clock being supplied to the internal
peripheral functions, allowing power dissipation to be reduced. Table 8.5 shows the status of the ports in
wait mode.
Wait mode is cancelled by a hardware reset or interrupt. If an interrupt is used to cancel wait mode, the
microcomputer restarts using as BCLK the clock that had been selected when the WAIT instruction was
executed.
When using an interrupt to exit Wait mode, the relevant interrupt must have been enabled and set to a
priority level above the level set by the interrupt priority set bits for exiting a stop/wait state (bits 2, 1, and 0
at address 009F
the flag register (FLG) processor interrupt level (IPL).
The priority level of the interrupt which is not used to cancel wait mode, must have been changed to 0.
When using an interrupt to exit Wait mode, the microcomputer resumes operating the clock that was oper-
ating when the WAIT command was executed as BCLK from the interrupt routine.
If only a hardware reset or an NMI interrupt is used to cancel stop mode, change the priority level of all
interrupt to 0, then shift to wait mode.
Address bus, data bus, CS0 to CS3,
BHE
RD, WR, WRL, WRH, DW, CASL,
CASH
RAS
HLDA,BCLK
ALE
Port
CLK
C
_____
________
9
0 .
8 /
B
0
0
0
1
OUT
______
A
8
G
u
7
o r
. g
0 -
u
1
________ _________ ______
0
p
0
, 2
0
2
0
0
16
5
Pin
When f
When f
). Set the interrupt priority set bits for the exit from a stop/wait state to the same level as
Page 50
_______
C
8
, f
selected
_________
32
f o
selected Does not stop when the WAIT peripheral function clock stop bit
______
_______
3
2
9
Does not stop
Retains status before wait mode
“H” (Note)
“H”
“L”
Retains status before wait mode
is “0”. When the WAIT peripheral function clock stop bit is “1”,
the status immediately prior to entering wait mode is main-
tained.
“H” (Note)
Memory expansion mode
Microprocessor mode
________
________
Retains status before wait mode
8. Clock Generating Circuit
Single-chip mode
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