HD6432646 Hitachi, HD6432646 Datasheet - Page 38
HD6432646
Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432646.pdf
(1155 pages)
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Item
Memory
Interrupt controller
Power-down states
Operating modes
Clock pulse
generator
Packages
4
Specification
Product Name
H8S/2646, H8S/2646R
H8S/2648, H8S/2648R
H8S/2645
H8S/2647
Four MCU operating modes
Mode
4
5
6
7
Flash memory
High-speed static RAM
Seven external interrupt pins (NMI, IRQ0 to IRQ5)
Internal interrupt sources
Eight priority levels settable
Medium-speed mode
Sleep mode
Module-stop mode
Software standby mode
Hardware standby mode
Sub-clock operation
On-chip PLL circuit ( 1, 2, 4)
Input clock frequency: 4 to 20 MHz
Sub-clock frequency: 32.768 kHz
144-pin plastic QFP (FP-144)
43 (H8S/2646, H8S/2646R, H8S/2645)
47 (H8S/2648, H8S/2648R, H8S/2647)
CPU
Operating
Mode
Advanced
Description
On-chip ROM disabled
expansion mode
On-chip ROM disabled
expansion mode
On-chip ROM enabled
expansion mode
Single-chip mode
ROM
128 kbytes
64 kbytes
On-Chip
ROM
Disabled
Disabled
Enabled
Enabled
RAM
4 kbytes
2 kbytes
Initial
Value
16 bits
8 bits
8 bits
—
External Data Bus
Maximum
Value
16 bits
16 bits
16 bits
—
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