upd17240 Renesas Electronics Corporation., upd17240 Datasheet - Page 3

• Manufacturer Part Number: upd17240
• Description: 4-bit Single-chip Microcontrollers For Small General-purpose Infrared Remote Control Transmitters
• Manufacturer: Renesas Electronics Corporation.

DIFFERENCES BETWEEN µ PD17246 SUBSERIES, µ PD17236 SUBSERIES, AND µ PD17255
SUBSERIES (1/2)
ROM
RAM
Ports
Reset
• Reset by watchdog
• Reset by stack pointer
• Low-voltage detector
Capacitor for oscillation
Vector address
RAM retention flag
timer
(mask option)
Item
µ PD17240, 17241, 17242, 17243, 17244, 17245, 17246
The RESET pin is internally pulled down by the occurrence of
Selected by mask option
µ PD17240: 2,048 × 16 bits
µ PD17241: 4,096 × 16 bits
µ PD17242: 6,144 × 16 bits
µ PD17243: 8,192 × 16 bits
µ PD17244: 10,240 × 16 bits
µ PD17245: 12,288 × 16 bits
µ PD17246: 16,384 × 16 bits
447 × 4 bits
P0B
P0C
P0D
P1A
P1B
the internal reset signals on the left, causing a reset (usually,
the RESET pin is pulled up).
(15 pF)
Basic interval timer: 0002H
Rising and falling
edges of INT pin:
8-bit timer:
Provided
µ PD17246 Subseries
0
0
0
0
0
: I/O, functions
to P0B
to P1A
to P0C
to P0D
alternately as INT pin
3
2
3
3
: I/O (bit I/O)
: I/O (bit I/O)
: I/O (group I/O)
: I/O (group I/O)
Data Sheet U15002EJ1V1DS
0003H
0004H
µ PD17230: 2,048 × 16 bits
µ PD17231: 4,096 × 16 bits
µ PD17232: 6,144 × 16 bits
µ PD17233: 8,192 × 16 bits
µ PD17234: 10,240 × 16 bits
µ PD17235: 12,288 × 16 bits
µ PD17236: 16,384 × 16 bits
223 × 4 bits
P0B
P0C
P0D
P1A
Not provided
Basic interval timer:
Rising and falling edges of INT pin: 0002H
8-bit timer:
Not provided
µ PD17236 Subseries
0
0
0
0
: Input or output
to P0B
to P0C
to P0D
option
selectable by mask
3
3
3
: I/O (bit I/O)
: I/O (group I/O)
: I/O (group I/O)
µ PD17225: 2,048 × 16 bits
µ PD17226: 4,096 × 16 bits
µ PD17227: 6,144 × 16 bits
µ PD17228: 8,192 × 16 bits
111 × 4 bits
( µ PD17225, 17226)
223 × 4 bits
( µ PD17227, 17228)
P0B
P0C
P0D
A low level is output from the
WDOUT pin by the
occurrence of the internal
reset signals on the left, and
a reset takes place if the
WDOUT pin is externally
connected to the RESET pin.
µ PD17225 Subseries
0001H
0003H
0
0
0
to P0B
to P0C
to P0D
3
3
3
: Input
: Output
: Output
3