LC87F2924B Datasheet, PDF (4/28 Pages) Sanyo Semicon Device – CMOS IC FROM 26K byte, RAM 768 byte on-chip 8-bit 1-chip Microcontroller

LC87F2924B
„Oscillation Circuits
• RC oscillation circuit (internal):
For system clock
• CF oscillation circuit:
For system clock, with internal Rf
• Crystal oscillation circuit:
For low-speed system clock, with internal Rf
• Frequency variable RC oscillation circuit (internal): For system clock
1) Adjustable in ±4% (typ) step from a selected center frequency.
2) Measures oscillation clock using a input signal from XT1 as a reference.
„System Clock Divider Function
• Can run on low current.
• The minimum instruction cycle selectable from 300ns, 600ns, 1.2μs, 2.4μs, 4.8μs, 9.6μs, 19.2μs, 38.4μs,
and 76.8μs (at a main clock rate of 10MHz).
„Standby Function
• HALT mode: Halts instruction execution while allowing the peripheral circuits to continue operation.
1) Oscillation is not halted automatically.
2) There are three ways of resetting the HALT mode.
(1) Setting the reset pin to the low level
(2) System resetting by watchdog timer
(3) Occurrence of an interrupt
• HOLD mode: Suspends instruction execution and the operation of the peripheral circuits.
1) The CF, RC, X’tal, and frequency variable RC oscillators automatically stop operation.
2) There are four ways of resetting the HOLD mode.
(1) Setting the reset pin to the low level.
(2) System resetting by watchdog timer
(3) Setting at least one of the INT0, INT1, INT2, INT4, INT5, INT6, and INT7 pins to the specified level
(4) Having an interrupt source established at port 0
• X'tal HOLD mode: Suspends instruction execution and the operation of the peripheral circuits except the base timer.
1) The CF, RC, and frequency variable RC oscillators automatically stop operation.
2) The state of crystal oscillation established when the X'tal HOLD mode is entered is retained.
3) There are six ways of resetting the X'tal HOLD mode.
(1) Setting the reset pin to the low level
(2) System resetting by watchdog timer
(3) Setting at least one of the INT0, INT1, INT2, INT4, INT5, INT6, and INT7 pins to the specified level
(4) Having an interrupt source established at port 0
(5) Having an interrupt source established in the base timer circuit
(6) Having an interrupt source established in the day and time counter circuit
„On-chip Debugger
• Supports software debugging with the IC mounted on the target board (LC87D2932A).
LC87F2924B has an On-chip debugger but its function is limited.
„Package Form
• TQFP64J (7 × 7):
• FLGA68K (6.0 × 6.0):
• FLGA64 (5.0 × 5.0):
Lead-free type
Lead-free type
Lead-free type
„Development Tools
• On-chip debugger: TCB87- TypeB + LC87D2932A
„Programming Boards
Package
TQFP64J (7×7)
FLGA68K (6.0×6.0)
FLGA64 (5.0×5.0)
Programming boards
W87F58256TQ7
W87F58256FL6 * This board is Built To Order. It may take about a month to deliver.
W87F59256FL5 * This board is Built To Order. It may take about a month to deliver.
No.A1211-4/28