MC68HC705B16CFN Freescale Semiconductor, MC68HC705B16CFN Datasheet - Page 251
Manufacturer Part Number
IC MCU 2.1MHZ 15K OTP 52-PLCC
Specifications of MC68HC705B16CFN
Number Of I /o
Program Memory Size
15KB (15K x 8)
Program Memory Type
256 x 8
352 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
-40°C ~ 85°C
Package / Case
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
This errata section outlines the differences between two previously available masksets
(D59J and D40J) and all other masksets. Unless otherwise stated, the main body of
Appendix G refers to all these other masksets with any differences being noted in this
For the D59J:
The STOP Idd is greater than the expected value of 120µA at 5 volts Vdd at a
temperature of 20°C with the CAN module enabled and in SLEEP mode. Typically the
STOP Idd is in the region of 2.0 milliamps at 20°C.
The fault lies with the design of the EPROM array. When the STOP instruction is
executed, the next opcode in memory is present on the data bus. A fault in the EPROM
write data latch circuitry causes a latch to be driven to logic 0 on both sides when the
data bus for that bit is logic 1. This results in increasing STOP Idd of 450µA per data
bus bit set to a logic 1. If all data bus bits are set to logic 1 (i.e. next opcode is $FF,
STX 0,X) the STOP Idd shall be in the region of 3.6mA.
The minimum STOP Idd is achieved by ensuring the opcode immediately following the
STOP instruction is data $00. This corresponds to BRSET 0,ADDRESS,LABEL. If the
label points to the next sequential instruction in memory then this has the effect of a 5
cycle NOP but note that the carry bit in the condition code register may be altered by
the BRSET instruction.
For the D59J and D40J masksets, the MCU only requires that a logic zero is
applied to the RESET input for 1.5 t
For D59J, 16 cycle POR delay option (t
For the D59J maskset, oscillator divide ratio DIV10 is forced in Bootstrap mode.
On all other revisions DIV2 is forced.
) is not available