M16C/6N Group
Differences between M16C/6NA and M16C/6N4
REJ05B0466-0100Z/Rev.1.00 May 2004 Page 2 of 6
Table 3.1.2 Function differences (mask ROM version and flash memory version)-2(Note1)
Item M16C/6NA M16C/6N4
Timer A two-phase pulse signal
processing
No function Z-phase (counter reset)
input
Function Z-phase (counter reset) input
Timer functions for three-phase
motor control
No function protected by protect register
Dead time timer count source is fixed at
f
2
divided by 2
Function protect by protect register
Dead time timer count source is
selected: f
1
, f
1
divided by 2
Output polarity change, carrier wave
phase detection, three-phase output
forcible shutoff function by NMI input are
available
Serial I/O (Note 2)
(UART0 to UART2)
(UART, Clock synchronous) x 2
(UART, Clock synchronous, I
2
C bus,
IEBus) x 1
(UART, Clock synchronous, I
2
C bus,
IEBus) x 3
Serial I/O RTS timing Assert low when reception is completed Assert low when receive buffer is read
UART2 data transmit timing
After data was written, transfer starts at
the 1st BRG overflow timing (Output
starts one cycle of BRG overflow earlier
than UART0 and UART1)
After data was written, transfer starts at
the 2nd BRG overflow timing (same as
UART0 and UART1)
Serial I/O
Sleep function
Have None
Serial I/O
I
2
C mode
Start condition, stop condition:
Not auto-generation
Start condition, stop condition:
Auto-generation
Serial I/O
I
2
C mode
SDA delay
Only analog delay is selected as SDA
delay.
SDA digital delay count source: 1/f(X
IN
)
Only digital delay is selected as SDA
delay
SDA digital delay count source: BRG
SI/O3
Clock polarity
Fixed Selectable
A-D converter operation clock Selectable: f
2AD
, f
2AD
/2, f
2AD
/4
Selectable: f
AD
, f
AD
divided by 2, 3, 4, 6,
12
CAN CPU interface sleep function
None
CAN0 and CAN1 can select CPU
interface operating or sleeping
respectivly
CAN error interrupt
CAN wake up interrupt
- CAN0/1 error interrupt
- CAN0/1 wake up interrupt
Switchable
- CAN0/1 error interrupt ,CAN0/1 wake
up interrupt and
- CAN0 error interrupt, CAN0 wake up
interrupt and CAN1 error interrupt,
CAN1 error interrupt
Condition of CAN wake up
interrupt
CAN wake up interrupt occurs
regardless of CAN operation mode
When CAN module enters CAN sleep
mode, CAN wake up interrupt occurs.
Note1: For details and characteristics, refer to hardware manual. When switching to M16C/6N4 group, conduct the equivalent of system
evaluation tests conducted in M16C/6NA group.
Note2: I
2
C-bus is a trademark of Philips. IEBus is a trademark of NEC Electronics.
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